Create config from constructor

Temporary disable help screen for `node-inspector` command
Deprecate allowed web-host `null` value

(Use `0.0.0.0` instead)
Use yargs as argv preprocessor in config.js
Exclude configuration logic from node-debug

All configuration logic now stored in lib/config.js
Temporary disable help and version options handling in node-debug
Added customizable webHost to node-debug

Switch from `localhost` to `127.0.0.1` notation
Closes #367
New help system
Added usage examples
Update README.MD
README: Add info on debugging Gulp tasks

Close #448
HeapProfiler API

Implemented:
HeapProfiler.getProfileHeaders
HeapProfiler.startTrackingHeapObjects
HeapProfiler.stopTrackingHeapObjects
HeapProfiler.getHeapSnapshot
HeapProfiler.removeProfile
HeapProfiler.clearProfiles
HeapProfiler.takeHeapSnapshot
HeapProfiler.addProfileHeader
HeapProfiler.addHeapSnapshotChunk
HeapProfiler.finishHeapSnapshot
HeapProfiler.reportHeapSnapshotProgress
HeapProfiler.lastSeenObjectId
HeapProfiler.heapStatsUpdate
HeapProfiler.getObjectByHeapObjectId