bump version and changelog for 2.1.1

CHANGELOG.md

+### 2.1.1
+- Fix bug preventing match_id and participant_id passed as underscore properties for URL generation #32
+
 ### 2.1.0
 - Fix null values being returned as empty objects (#24)
 - Add processCheckIns and abortCheckIn methods to tournament api

package.json

@@ -3,7 +3,7 @@
   "description": "Wrapper for the challong api",
   "author": "Aaron Tiwell <aaron.tidwell@gmail.com>",
   "main": "./lib/challonge.js",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "contributors": [
     {
       "name": "Ricardo Reis",