[dist] Version bump. 0.6.4
[dist] Version bump. 0.6.4

ContinuumIO/forever,kethle/forever,jotham/forever,nguyen-tien-mulodo/forever,vcarrera/forever,foreverjs/forever,saisai/forever,ryan321/forever,Jonekee/forever,rakyll/forever,yyx990803/forever,saisai/forever,ryan321/forever,nguyen-tien-mulodo/forever,rbramwell/forever,vcarrera/forever,arnabsinha4u/demo-documentation,JJediny/forever,rbramwell/forever,jqk6/forever,Jonekee/forever,jqk6/forever,arnabsinha4u/demo-documentation,yyx990803/forever,JJediny/forever,kethle/forever,foreverjs/forever,ContinuumIO/forever,rakyll/forever,jotham/forever