Include bower in global install. Clean readme.

Alphabetize global npm packages in list, as a sensible default.

Since bower is required, it should be part of the global setup.

A few EOL-spaces were deleted by my editor.

Code fence was used for installation instructions to provide better multi-line readability.
Merge pull request #1 from brookr/br-readme-cleanup

Include bower in global install. Clean up readme a bit.