Added event emitter for config error.
Added event emitter for config error.

mjmostachetti/grasshopper-core-nodejs,grasshopper-cms/grasshopper-core-nodejs,Solid-Interactive/grasshopper-core-nodejs,grasshopper-cms/grasshopper-core-nodejs,mjmostachetti/grasshopper-core-nodejs,Solid-Interactive/grasshopper-core-nodejs