Update README.md
Merge pull request #30 from fxn/patch-1

Update README.md
removed toc, additional minor cleanup
fixed a typo
added an advice about ActiveAttr
added a mention of rake db:test:prepare
a few small additions
Recommended usage of human-readable URLs and the FriendlyId gem.
Added example of the usage of change method in ActiveRecord migrations.
Added rule for RSpec examples using have(x).errors_on instead of be_valid.
Some style recommendations for Rails internationalization.
Recommended usage of has_many :through instead of has_and_belongs_to_many,
Merge pull request #32 from tsvetomilam/master

Added some style recommendations
added mail hints
compass added to gems list
priceless gems sorted
Merge pull request #33 from vsakarov/master

small additions
A few tips about ActiveResource.
Merge pull request #34 from tsvetomilam/master

A few tips about ActiveResource
Fix typo, perhaps even grammar