drop ruby 1.8.7 support
start to update deps

octokit has change in var name
new version of image_optim adds pngquant to mix
fix old indentation issue that was bugging me
version number during dev
useless white space
badges are SVG these days
proper capitalization of GitHub

minor but it bugs me
slight cleanup

indicate required RUBY_VERSION as well
warning thar be dragons
better description and indicate license
dry for release
Merge pull request #3 from mroth/modernize

Update to work in modern world