Merge pull request #67 from Assada/feature/structure

Update README.md
test xhr
Merge pull request #68 from Assada/feature/getServersData

test xhr
fix xhr
Merge pull request #69 from Assada/feature/getServersData

fix xhr
test
Merge remote-tracking branch 'origin/features/popup' into develop

Conflicts:
	left/tracker/src/main/extensions/src/common/app/popup.js
fix popup
Merge pull request #71 from Assada/features/popup

fix popup
Update README.md
grunt compress images (imagemin)