deps: jscs@2.6.0 & ember-suave@1.2.3

no issue
- fixes an error that popped up after ember-suave's `brocolli-jscs` dependency moved to `2.6.0` which duplicated some of the rules that `ember-suave` used to implement

core/client/package.json

@@ -45,7 +45,7 @@
     "ember-resolver": "2.0.3",
     "ember-simple-auth": "1.0.0",
     "ember-sinon": "0.3.0",
-    "ember-suave": "1.2.2",
+    "ember-suave": "1.2.3",
     "ember-watson": "0.7.0",
     "fs-extra": "0.16.3",
     "glob": "^4.0.5",

package.json

@@ -90,6 +90,7 @@
     "grunt-mocha-istanbul": "2.4.0",
     "grunt-shell": "1.1.2",
     "grunt-update-submodules": "0.4.1",
+    "jscs": "2.6.0",
     "jscs-jsdoc": "1.2.0",
     "matchdep": "0.3.0",
     "nock": "2.3.0",