update gemspec for 1.2.x
Add support for s3 using spreecore
Add readme for s3 support
Merge pull request #34 from ajjahn/1.2.x

update gemspec for 1.2.x
Merge pull request #36 from Maxim-Filimonov/s3_support

S3 support
Switched to Spree 1.2.0 and it's Spree::Money + make use of gem 'spree_auth_devise'
Added support for any Spree version >= 1.2 and < 2
Merge branch 'future-spree-support'