Updating `LICENSE`

Summary: Note that I do not see a legal reason to include the license header to every single file of code yet.

Disadvantages:

 - Copy-Paste Detection would go insane
 - We'll forget to include it
 - We'll have to update it every year, committing unnecessary changes

It's not like somebody will copy the code here and drop it into their own project, anyway.
Merge branch 'dev'
Merge pull request #30 from AnhNhan/dev

 - Removing a few comments from `mocks/lang/fullblownobject.al`
 - Adding some cool stuff to `Tokenizer`
Adding badges
Adding badges to `README.md`
Adding `AnLabs/AnImg` to dev dependencies
Merge pull request #32 from AnhNhan/badges

Badges ;)
Fixing Composer