merge stuff from bucketizer
update .gitignore to include Gemfile.lock and ruby-version
rename all files from buckizer to bucketer
change all references of bucketizer to bucketer
update gemspec and README for authors, homepage etc, licence
incorporate feedback from sean to rename methods/constants in InMemory
initialize callbacks in initialize method in InMemory
Merge pull request #1 from dgvz/buckeneer

Create InMemory Bucketer