fixing JSON error in package.gulp.json
fixing JSON error in package.gulp.json

pattern-lab/patternlab-node,stevemartin/patternlab-node,stevemartin/patternlab-node,pattern-lab/patternengine-node-mustache,geoffp/patternlab-node,pattern-lab/patternlab-node,pattern-lab/patternlab-node,geoffp/patternlab-node,pattern-lab/patternlab-node