default to development mode

[bjrmatos]

just to keep track what we have discussed in other comments

[pofider]

jsreport-core

• change the default mode in jsreport-core to development
• very clearly note in the logs which NODE_ENV we are starting in and if (which) configuration file is applied

jsreport

• change the installation instructions

PRODUCTION INSTALLATION

npm install jsreport --production
node node_modules/jsreport --init
npm start --production

DEVELOPMENT INSTALLATION

npm install jsreport 
node node_modules/jsreport --init
npm start

• the node node_modules/jsreport --init should likely create both config files, prod.config.json and dev.config.json

The current users using command node server.js to start the server likely won't get the expected configuration but I guess it will be very visible from the log that the development environment is applied and especially the port is different. I guess it is not big problem.

[pofider]

This should be ready now. As said in the comment, the change is not that dramatic, we can include it in the 0.12

[bjrmatos]

excellent!