capitalize Composer, for consistency's sake
fix huge grammar mistake
Describe Composer

This way, non-php developers won't waste too much time looking into it.
add usage hints
fix repetition

I failed to make the "Adapt" step in the "Copy-Paste-Adapt" sequence
Replace @while loops with @for loops

This makes the code shorter and easier to read. In addition, it makes it
compile successfully with pyScss, which doesn't support @while loops.
Merge pull request #60 from jodal/remove-while-loops

Replace @while loops with @for loops
Fixed $gridColums with $gridColumns
Merge pull request #62 from anwarjaved/patch-1

Fixed $gridColums with $gridColumns