added a digit to RGB value of aerodrome's casing-color
Merge pull request #24 from skorasaurus/aerodrome

added a digit to RGB value of aerodrome's casing-color
add install directions, link to download, improved description, fixes #20
fix typo in README
Merge pull request #27 from skorasaurus/docu

add install directions, link to download, improved description, fix #20
First shot in upgrading icons to CartoCSS ones