Removed redundant error format on POST and PUT /products
Merge remote-tracking branch 'origin/gh-pages' into gh-pages

Conflicts:
	CHANGELOG.md
 * Added POST /stores route to add a new store
 * Added DELETE /stores/{id} route to disable an existing store
Merge remote-tracking branch 'origin/gh-pages' into gh-pages

Conflicts:
	CHANGELOG.md
Merging fixes