Add category methods to client with tests
Refactor specs. Moving specs up a folder. Extract specs to separate files.

- Breaking large 'it' specs into smaller 'its' making use of implicit subjects and one-liners.
- Adding .rspec to always require 'spec_helper', give colour for Mac OS X terminal and documentation format when not run through Guard.
- Updated Guardfile to correctly monitor source code in lib/kickscraper and subfolders.
Replace before(:all) with rspec's subject and let for contexts. Added method alias for more_projects_available? which feels more 'ruby-ish'.
Merge branch 'master' of https://github.com/markolson/kickscraper

Conflicts:
	spec/lib/kickscraper_spec.rb
Fix call for single category to not be expecting an array but to coerce the body directly.
Merge pull request #7 from jamlen/master

Category methods on Client, and improved specs