Hey! I got the same issue, i solved it by using this:

{
	module: 'newsfeed',
	position: 'bottom_center',
	config: {
		feeds: [
			   {
			   title: "Expressen",
			   url: "http://expressen.se/rss/nyheter",
			   encoding: "ISO-8859-1",
			   },
		        ],
			showSourceTitle: true,
			showPublishDate: true,
			showDescription: true,
			reloadInterval: 200000,
			updateInterval: 15000,
			animationSpeed: 3500
                  }
}, 

When i was trying with Aftonbladet, DN and my local paper, they all worked without encoding, so there must be something in Expressens feed.

@RedNax
Thx for your reply! I forgot to update my post to tell you that i found how to remove the ‘rain-part’ :P But thanx for the note on the windspeedconversion!
Oh, a also figured out my problems with the icons. i replaced the files in the vendors folder, exept for weather-icons.css. I thought those two files were the same, until i saw them side-by-side :)

Couple of things…

Wind icons.
Ive tried copy weather-icons-wind.css to the vendor folder and change vendor.js with no luck.
I also tried to change getStyles: in the MMM-WunderGround.js file to use the ...-wind.cssfile located in the module folder.

Since its just the wind icons do i need to do anything special to use them?

How can i remove Sunrise/Sunset and mm (rain amount)
Im also wondering how to change the unit km/tim (km/h Swedish translate) to m/s?

As soon as i try to change anything to remove anything involved “Sunset” or “mm” everything breaks. I cant even remove /astronomy from getParams:. (Wich i believe is the wrong way to do it, But its better to try your way ahead then to hide in the corner.)

I want it to look more like this ->

I had no problems changing the default weather modules this way, but since im a newbie i cant figure this one out. :P

This happens to me to.
Using rPi 2 with latest Jessie, trying to make an fresh install of MM2 after i went total berserk and changed to much in config files and tried 3 party modules.
First try i followed instructions on Git, but it didnt help. Then i tried @KirAsh4 's Setup guide, got to npm start step, and was seeing an error message. Thought i was to hasty and missed something, so i did it again. I read and re-read all the steps before re-installing calmly and safe :) Then at npm start same thing happend.

from npm-debug.log:

0 info it worked if it ends with ok
1 verbose cli [ '/usr/bin/nodejs', '/usr/bin/npm', 'start' ]
2 info using npm@3.9.5
3 info using node@v6.2.2
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle magicmirror@2.0.0~prestart: magicmirror@2.0.0
6 silly lifecycle magicmirror@2.0.0~prestart: no script for prestart, continuing
7 info lifecycle magicmirror@2.0.0~start: magicmirror@2.0.0
8 verbose lifecycle magicmirror@2.0.0~start: unsafe-perm in lifecycle true
9 verbose lifecycle magicmirror@2.0.0~start: PATH: /usr/lib/node_modules/npm/bin/node-gyp-bin:/home/pi/MagicMirror/node_modules/.bin:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games
10 verbose lifecycle magicmirror@2.0.0~start: CWD: /home/pi/MagicMirror
11 silly lifecycle magicmirror@2.0.0~start: Args: [ '-c', 'electron js/electron.js' ]
12 silly lifecycle magicmirror@2.0.0~start: Returned: code: 1  signal: null
13 info lifecycle magicmirror@2.0.0~start: Failed to exec start script
14 verbose stack Error: magicmirror@2.0.0 start: `electron js/electron.js`
14 verbose stack Exit status 1
14 verbose stack     at EventEmitter.<anonymous> (/usr/lib/node_modules/npm/lib/utils/lifecycle.js:245:16)
14 verbose stack     at emitTwo (events.js:106:13)
14 verbose stack     at EventEmitter.emit (events.js:191:7)
14 verbose stack     at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/lib/utils/spawn.js:24:14)
14 verbose stack     at emitTwo (events.js:106:13)
14 verbose stack     at ChildProcess.emit (events.js:191:7)
14 verbose stack     at maybeClose (internal/child_process.js:852:16)
14 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:215:5)
15 verbose pkgid magicmirror@2.0.0
16 verbose cwd /home/pi/MagicMirror
17 error Linux 4.4.14-v7+
18 error argv "/usr/bin/nodejs" "/usr/bin/npm" "start"
19 error node v6.2.2
20 error npm  v3.9.5
21 error code ELIFECYCLE
22 error magicmirror@2.0.0 start: `electron js/electron.js`
22 error Exit status 1
23 error Failed at the magicmirror@2.0.0 start script 'electron js/electron.js'.
23 error Make sure you have the latest version of node.js and npm installed.
23 error If you do, this is most likely a problem with the magicmirror package,
23 error not with npm itself.
23 error Tell the author that this fails on your system:
23 error     electron js/electron.js
23 error You can get information on how to open an issue for this project with:
23 error     npm bugs magicmirror
23 error Or if that isn't available, you can get their info via:
23 error     npm owner ls magicmirror
23 error There is likely additional logging output above.
24 verbose exit [ 1, true ]

EDIT:
Totally forgot that i was SSH:ing :/
DISPLAY=:0 nohup npm start & Worked like a charm!

Would be nice to edit the Setup guide with that ;)

Thank you Strawberry with everything.
I think i have to give this idea up tho. I have now been sitting for two days trying. But i just cant wrap my head around it. :/
Nothing makes sense for me with JavaScript. Not a single row of code have i been able to write.
Changing ‘fontColor’ is about my level of knowledge :P

I dont have any code. All this time i have been trying to understand what i am trying to do. If we look at The code from PIR-sensor, i dont know wich line are doing what. I have no clue on how and where to start. I cant see to understand The “building” of a module. All The “this. File” and what not dont make Any sense to me.
I need a How-to guide for toddlers :P

The python-button part is something i tried before, its the other language i have great difficulties with. (The one that MagicMirror is coded in.) since i dont understand The language, i cant read it and change/re-write what is needed for my idea to work. Ive been trying for 4h now.

Yeah… I have no idea what the heck i am doing^^,
This is way over my league.
Is there any good beginner guides for me? :p
I have been looking thru the PIR-Sensor module (and other) whilst reading the “Module Dev. Docu.” trying to understand.