Replace indentation with tabs with spaces.

Indentation was kind of messy mixing tabs and spaces.
Added bower.json for Bower Integration
Merge pull request #493 from paladisco/master

Added bower.json for Bower Integration
Added MIT License.
Merge pull request #529 from paulirish/license

Added MIT License.
* jquery.infinitescroll.js
  - changed comment from `/*` to `/*!` so YUI and other compressors will preserve it during minification
* jquery.infinitescroll.min.js
  - brought in preserved licensing comment
  - added trailing semicolon (;) so it will `cat` nicely with other JS files in build scripts
Merge pull request #533 from jvanasco/master

small build / distribution improvements
Bumped version number, updated Readme.
Merge pull request #534 from paulirish/chore/maintainer-update

Bumped version number, updated Readme.
Merge pull request #434 from iurifq/master

Fix indentation
AMD support

...and some jshint stuff
losing window as a local variable for AMD's sake
Merge pull request #540 from szepeviktor/patch-1

AMD support
Convert double quotes to single quotes

Convert all non-escaping double quotes to single quotes for consistency throughout file
Update README documentation for all methods
Return error if ! appendCallback
Merge pull request #553 from austentalbot/patch-1

Convert double quotes to single quotes
Fixes #581
B: infscr_loadcallback behavior missing url
Merge pull request #573 from jtsternberg/master

Return error if ! appendCallback