Update tests

Makefile

@@ -1,4 +1,4 @@
 test:
-  @./node_modules/.bin/mocha --timeout 10000 --reporter spec
+	@./node_modules/.bin/mocha --timeout 10000 --reporter spec
 
 .PHONY: test

package.json

@@ -1,34 +1,34 @@
 {
-  "name":"500px",
-  "description":"A wrapper for the 500px.com API",
-  "keywords":[
+  "name": "500px",
+  "description": "A wrapper for the 500px.com API",
+  "keywords": [
     "api",
     "500px"
   ],
-  "version":"0.3.2",
-  "homepage":"http://ro-ka.github.com/node-500px/",
-  "repository":"git://github.com/ro-ka/node-500px.git",
-  "author":{
-    "name":"Robert Katzki",
-    "email":"robert@katzki.de",
-    "url":"http://katzki.de/"
+  "version": "0.3.2",
+  "homepage": "http://ro-ka.github.com/node-500px/",
+  "repository": "git://github.com/ro-ka/node-500px.git",
+  "author": {
+    "name": "Robert Katzki",
+    "email": "robert@katzki.de",
+    "url": "http://katzki.de/"
   },
-  "main":"./lib/api500px.js",
-  "scripts":{
-    "test":"make test"
+  "main": "./lib/api500px.js",
+  "scripts": {
+    "test": "make test"
   },
-  "devDependencies":{
-    "mocha":"1.0.x",
-    "should":"0.6.x"
+  "devDependencies": {
+    "mocha": "^1.21.4",
+    "should": "^4.0.4"
   },
-  "dependencies":{},
-  "engines":{
-    "node":">= 0.4.0"
+  "dependencies": {},
+  "engines": {
+    "node": ">= 0.4.0"
   },
-  "licenses":[
+  "licenses": [
     {
-      "type":"MIT",
-      "url":"http://github.com/ro-ka/node-500px/raw/master/LICENSE"
+      "type": "MIT",
+      "url": "http://github.com/ro-ka/node-500px/raw/master/LICENSE"
     }
   ]
 }