added examples of custom executables to the default warble.rb
added examples of custom executables to the default warble.rb

ctreatma/warbler,fedenusy/warbler,mkristian/warbler,mkristian/warbler,fedenusy/warbler,fedenusy/warbler,idibon/warbler,idibon/warbler,idibon/warbler,ctreatma/warbler,idibon/warbler,ctreatma/warbler,mkristian/warbler,fedenusy/warbler,ctreatma/warbler