fix lerpColor

Author: lauren mccarthy

Gruntfile.js

@@ -175,7 +175,7 @@ module.exports = function(grunt) {
     },
     release: {
       options: {
-        github: { 
+        github: {
           repo: 'lmccart/p5.js', //put your user/repo here
           usernameVar: process.env.GITHUB_USERNAME, //ENVIRONMENT VARIABLE that contains Github username 
           passwordVar: process.env.GITHUB_PASSWORD //ENVIRONMENT VARIABLE that contains Github password