Fix #127

[DeviaVir]

Displaying help worked fine, long as you specified the command. To make sure people can't run into this again, made deploy the default with an alias to deploy.

Results:

$ bin/node-lambda -h

  Usage: node-lambda|deploy [options] [command]


  Commands:

    package|zip [options]   Create zipped package for Amazon Lambda deployment
    run|execute [options]   Run your Amazon Lambda application locally
    setup [options]         Sets up the .env file.

  Deploy your application to Amazon Lambda

  Options:

    -h, --help                                                                                                                    output usage information
    -V, --version                                                                                                                 output the version number
    -e, --environment []                                                                                                          Choose environment {dev, staging, production}
    -a, --accessKey [undefined]                                                                                                   AWS Access Key
    -s, --secretKey [undefined]                                                                                                   AWS Secret Key
    -P, --profile []                                                                                                              AWS Profile
    -k, --sessionToken []                                                                                                         AWS Session Token
    -r, --region [us-east-1,us-west-2,eu-west-1]                                                                                  AWS Region
    -n, --functionName [node-lambda]                                                                                              Lambda FunctionName
    -H, --handler [index.handler]                                                                                                 Lambda Handler {index.handler}
    -o, --role [missing]                                                                                                          Amazon Role ARN
    -m, --memorySize [128]                                                                                                        Lambda Memory Size
    -t, --timeout [60]                                                                                                            Lambda Timeout
    -d, --description [Command line tool for locally running and remotely deploying your node.js applications to Amazon Lambda.]  Lambda Description
    -u, --runtime [nodejs4.3]                                                                                                     Lambda Runtime
    -p, --publish [false]                                                                                                         Lambda Publish
    -v, --version []                                                                                                              Lambda Function Version
    -b, --vpcSubnets []                                                                                                           Lambda Function VPC Subnets
    -g, --vpcSecurityGroups []                                                                                                    Lambda VPC Security Group
    -A, --packageDirectory [undefined]                                                                                            Local Package Directory
    -f, --configFile []                                                                                                           Path to file holding secret environment variables (e.g. "deploy.env")
    -x, --excludeGlobs []                                                                                                         Space-separated glob pattern(s) for additional exclude files (e.g. "event.json dotenv.sample")
    -D, --prebuiltDirectory []                                                                                                    Prebuilt directory