only minor fixes
allow for a custom exclude logic

this is just an example implementation for discussion, readme and docs are still missing.
add some minor docs for filtering
Merge pull request #149 from andrew/readme_proof_read

only minor fixes
Merge pull request #148 from andrew/custom_exclude_logic

Custom exclude logic
adding example screenshot to readme, closes #150
finished method accept goals that are not passed as arrays
Merge pull request #151 from andrew/goals_no_array

finished method accept goals that are not passed as arrays
add myself to list of contributors
bump version
start changelog updates for next release
More changelog entries
Merge pull request #153 from andrew/release/6.0.0

Release 0.6.0
Update CHANGELOG.mdown
Added @dimko to the changelog
Updated dates in changelog
Allowing arrays to be passed to ab_test

If an array is passed to ab_test method, then we select first element
as control and the rest as alternatives
removing useless line
Added spec for array as alternatives
Merge pull request #156 from fenelon/master

Allow arrays to be passed to ab_test