Add git push -u command to git tutorial.
Added swift docs
Formatted the document according to the guidelines
Merge pull request #636 from grant/master

Swift
Merge pull request #635 from levibostian/git-push-addition

Add git push -u command to git tutorial.
Translating coffeescript to pt-br
zh-cn translatation for Swift
Tiny symbol missing fixed.
Merge pull request #638 from xavieryao/master

[swift/zh-cn] zh-cn translation for swift
Tiny typo fix
Merge pull request #639 from ysagal/patch-1

Tiny typo fix
Merge pull request #637 from miguelarauj1o/trans_coffeescript

Translating coffeescript to pt-br
Add lang: tag for swift/zh-cn - fixes #640
Update elixir.html.markdown

minor spelling fix: `s/catched/caught/`
Merge pull request #641 from wobh/patch-1

Update elixir.html.markdown
Add extra detail
Shortens line lengths of comments in Perl guide
Merge pull request #644 from timothymalcham/perl-doc-line-lengths

[perl/en] Shortens line lengths of comments in Perl guide
Changed "complimenting" to "complementing".
Merge pull request #646 from nati22/master

Changed "complimenting" to "complementing".