Version bump to 0.7.4
Added dependency on rrd-ffi
Refactored backend to use rrd-ffi
Added errand.gemspec
Upgrade declaration of sources in Gemfile for latest bundler
Bump version of Ruby for development to 1.9.3-p125
Merge from master
Freeze in gemspec
Switch to rrd-ffi from librrd
Pull in errand version dynamically
Bump errand version to 0.8.0