Add GitHub Search script

Uses GitHub's brand new code search API. Example use:

  hubot github search bigdata
  hubot github search rails/rails ActiveRecord
add scraper for developerexcuses.com
listen for soundcloud links and show information
Adds developer excuses plugin
Merge pull request #1054 from ianmurrays/developer-excuses-plugin

Adds developer excuses plugin
Clean up formatting
Version bump to 2.5.2
Fixed not sure if meme.  Added ability bring in memes from imgur.  Added Pay the Iron Price, Brace Yourself, Aliens guy, and One does not simply memes
Move achewood.coffee into the scripts directory
Remove duplicate dependencies information from tweet-content.coffee
fixed problems with tvshow.coffee, xml returned was different than expected
restored comment
added newline to eof
Change the regex in such a way so that user's name is stripped automatically.

- Thanks to @technicalpickles
Merge pull request #1052 from plukevdh/developerexcuses

add plugin to get excuses from developerexcuses.com
Merge pull request #1050 from prathamesh-sonpatki/strip-whitespace

Strip whitespace from user's name
Merge pull request #1040 from spajus/github-search

Add GitHub Search script
Merge pull request #1056 from tmustaine/master

Fixes to existing content and adding a few GoT memes.
Merge pull request #1057 from twe4ked/patch-1

Move achewood.coffee into the scripts directory
Merge pull request #1058 from twe4ked/patch-2

Remove duplicate dependencies information from tweet-content.coffee