Merge pull request #1 from danielegobbetti/master

Rephrased the README file.
Merge pull request #2 from danielegobbetti/master

Added Polish translation
stable version 1.3
favorites smiles was array!!!
fixed bug
move emoticon button
migration part 1
manifest2.0, fixed popup added emoticons
meme, text color and fix storage (maybe)
version 1.5
fixed default font color
themes
themes
no comments on manifest
new themes
themes
fast fix change font size
christmas update and new themes
new themes
Merge pull request #1 from chumkiu/master

merge upstream changes