expose string.js as AMD
do not define global object if a true amd loader is already defined
New slugify test. Test failing at this moment.
Merge branch 'master' of github.com:jprichardson/string.js
Merge branch 'expose-amd' of git://github.com/eduardo-matos/string.js into eduardo-matos-expose-amd

Conflicts:
	lib/string.min.js
Merge branch 'eduardo-matos-expose-amd'
Fixed slugify. Closes #17.
Fixed replaceAll bug. Closes #21
Updated to version 1.2.0
package.json version bump