added Objective-C
Update php.html.markdown

a few sentences to constants
Update php.html.markdown

?> instead of ? >
Create Visual Basic 

Contributing Visual Basic.
Update objvectiv-C.html.markdown
Added link to Javascript Garden
New file elisp.html.markdown for Emacs Lisp in 15 minutes.
Fix typo.
elisp.html.markdown: Bump to v0.2.
elisp.html.markdown: Fix typos.

Thanks to Alan Schmitt for reporting them.
Spelling error one of the comments in erlang.html.markdown

% Percent sign starts an one-line comment.
should be:
% Percent sign starts a one-line comment.
fix hotkey typo

o in c-xo instead of j
fix fib function for Lua: fib(0) must eql 0 not 1
Fix more typos.
Merge pull request #1 from LinXitoW/patch-1

fix hotkey typo
Fix hygienic macro example in racket.html.markdown
Fix typos in elisp

Fix typos
another semicolon typo
typo
Merge pull request #142 from gustavoschmidt/master

Fix hygienic macro example in racket.html.markdown