Bump .ruby-version to 1.9.3-p374
mention styleguide to new contributors
Merge pull request #806 from scribu/patch-1

Explicitly mention defacto styleguide
Updated History to reflect merge of #806
Merge pull request #801 from kevinSuttle/master

Bump .ruby-version to 1.9.3-p374
Update history to reflect merge of #801.