update changelog
update readme and config template for env_scripts
bump minor version
add goto command prototype
update changelog and version
add -c option to goto command
prep for 0.4.0beta2 release
fix goto command with -c
bump version
prep for 0.4.0 release
remove recipes feature

more details:

creating a gem just for a single line of deploy
script is overkill and not agile. Therefore, now
removing all traces of the recipe feature.

This makes allows me to remove a lot of code and
finally implement the multistage deploy feature,
as we can just add hooks for different rake tasks
throughout deployment.
run on multiple rubies
remove obsolete spec
remove repository dsl method
clean up RVM/rbenv stuff

Considering the fact that rbenv requires less 
setup I am considering it as a default. Since most
recent RVM versions support loading via
.ruby-version file, this should also work out of
the box with most rvm setups. Just specify the
scripts to load with env_scripts and if they don't
already source your rvmrc then just set
source_rvmrc in the blazing config.
refactor new rbenv/rvm setup

- rename env_scripts to env_script as we actually
load one script
- remove anything rvm/rbenv specific. People can
load their own env by specifiying env_script,
should work for everyone.
simplyfiy passing env variables around

- rake DSL method no longer accepts env as second
argument

- RAILS_ENV and any other env variable can be set
per target as a target option
fix #77 by checking if a gemfile is present
fix build for 1.8.7
add version and codeclimate badges