Merge branch 'master' of https://github.com/speric/slackthemes into speric-master

* 'master' of https://github.com/speric/slackthemes:
  Adds a Chargify theme

data/themes.yml

@@ -153,3 +153,4 @@
 - { colors: '#014A83,#053354,#dd661e,#ffffff,#053354,#ffffff,#dd661e,#dd661e', name: 'Florida Gators'}
 - { colors: '#ff8800,#000000,#ffffff,#000000,#4a5664,#000000,#000000,#736e65', name: 'Halloween'}
 - { colors: '#f1f1f1,#DDDDDD,#ff5d02,#FFFFFF,#DDDDDD,#000000,#28a05a,#ff5d02', name: 'Spreadfamily'}
+- { colors: '#2C2C26,#229725,#13C217,#FFFFFF,#229725,#FFFFFF,#13C217,#439AEA', name: 'Chargify'}