Inform Users of Failed Deploy with exitcode 1 see: dwyl#49

include package.json in zip file if listed in files_to_deploy

avoid adding unnecessary environment variables to .env file

Adds optional settings for Lambda Memory & Timeout

.env file only exported/created if listed in files_to_deploy fixes dw…

…yl#38

Adds ability to use Environment Variables in your Lambda Function usi…

…ng an .env file (e.g. using env2) see: dwyl#31

set Runtime to nodejs4.3 (latest) see: dwyl#33

Adds Babel Transpilation support for ES6 > ES5 ... lambda still only …

…supports ES5