Merge pull request #6 from kwaledesign/dev

fix issue #1
Merge pull request #7 from kwaledesign/dev

add test/ directory
Merge pull request #8 from kwaledesign/dev

update gem, bump version number
Merge pull request #10 from kwaledesign/dev

fix issue #3
Merge pull request #11 from kwaledesign/dev

fix issue #2
add docs