added linker feature

added link command to CLI
added Linker.ts() to API
links typescript references from packagemanager info jsons and adds to tsd.d.dts
scans
- /node_modules
- /bower_modules
looks for:
    typescript: {
        definitions: [
            'lib/foo.d.ts'
        ]
    }
or
    typescript: {
        definition: 'lib/foo.d.ts'
    }

installed definition for 'bl' from DT
tuned ignore files
tuned Gruntfile.js
dropped crufty _all.ts