Update dependencies, remove hubot-rss-reader

Updates hubot-kredits for the MediaWiki changes, among others.

Unfortunately, I wasn't able to get hubot-rss-reader to npm-install
anymore.

package.json

@@ -19,11 +19,10 @@
     "hubot-help": "^1.0.1",
     "hubot-incoming-webhook": "^1.1.1",
     "hubot-irc": "github:67P/hubot-irc#dev",
-    "hubot-kredits": "^3.7.0",
+    "hubot-kredits": "^3.8.0",
     "hubot-plusplus": "github:67P/hubot-plusplus#feature/configurable_points_term",
     "hubot-read-tweet": "0.0.2",
     "hubot-redis-brain": "1.0.0",
-    "hubot-rss-reader": "github:67P/hubot-rss-reader#e3252d63a908c065671c5416a0a4bffa323b27c6",
     "hubot-rules": "^1.0.0",
     "hubot-schedule": "^0.7.0",
     "hubot-scripts": "^2.5.16",