Added basic Favor class
Added TimeTransaction class with basic functionality
Added (incomplete) MemoryTimeManager
Added TimeBucket as a concept
Removed MemoryTimeBucket and Added the real, ActiveRecord supported, one
Added validation support to StaleObjectError throwed by TimeBucket class
Added two rake tasks to execute slow and fast tests
Merge pull request #13 from jd-erreape/add_basic_favor_classes

[WFA] Add basic favor and time transaction (exchange) classes
Updated README to include a contribution guide
Searcher class with basic test not running
Searching by title with regexp
Extract match method to an isolated class
Removed MemoryTimeBucket and Added the real, ActiveRecord supported, one
Extract match method to an isolated class
Extract match method to an isolated class
Merge branch 'add_basic_favor_classes' into searcher_basic_funcionality

Conflicts:
	Gemfile.lock
Merge branch 'master' into searcher_basic_funcionality

Conflicts:
	db/schema.rb
Add searching with activerecord
Commit after rebase with master, one test is not passing and I also have the problem with twice execution of test with guard
Merge branch 'searcher_basic_funcionality' of https://github.com/jd-erreape/time-bank into searcher_basic_funcionality

Conflicts:
	app/models/time_bucket.rb