add development group to gem file w/ notes about why

Signed-off-by: Tyler Pickett <t.pickett66@gmail.com>
add basic Travis build file

Signed-off-by: Tyler Pickett <t.pickett66@gmail.com>
add build status badge to readme

Signed-off-by: Tyler Pickett <t.pickett66@gmail.com>
Merge pull request #7 from tpickett66/ci-again

Travis CI