add photoshop

[jens1o]

_Fixes #191_

Changes proposed:

• Add
• Prepare
• Delete
• Fix

Things I've done:

• I've pulled the latest master branch
• I've run npm install to install all the dependenies
• I've checked my code, it is clean.
• I've run ESLint.
• My pull request fixes an issue, I referenced the issue.
• My pull request is not too big, otherwise I've already squashed it.
• I've run npm run build to build the extension. (If I had done something with the extension.)

add psd files

[robertohuertasm]

@jens1o can we make this icon a little bit smaller? You're using the 32x32 without leaving any margin and looks a little bit bigger than the other ones.
Take a look at #200

[jens1o]

What's the standard margin? There are no informations for that.

[robertohuertasm]

You're absolutely right. Take a look at #200 2px

[robertohuertasm]

@jens1o still to PR pending. Let me know when they're ready to merge 😉

[jens1o]

I'd forget, sorry. Coming now.

[jens1o]

ready