utilize default parameters

[v0lkan]

instead of this

babil.initialize( {
    srcPath: join( __dirname, 'lib' ),
    rootPath: join( __dirname, '..',
    babelPath: join( __dirname, '../node_modules/babel-cli/bin/babel.js' )
} );

do this

babil.initialize( { cwd: __dirname } );

and let the rest of the options get defaults from that parameters.