drush 4.6
drush 4.6

Closes #49.

Signed-off-by: Jack Nagel <43386ce32af96f5c56f2a88e458cb94cebee3751@gmail.com>

DomT4/homebrew-versions,Ashton-W/homebrew-versions,heuermh/homebrew-versions,coeligena/homebrew-verscustomized,jimhe/homebrew-versions,UniqMartin/homebrew-versions