Fixed typos

@@ -193,7 +193,7 @@ Casper.prototype.back = function back() {
 };
 
 /**
- * Encodes a resource using the base64 algorithm synchroneously using
+ * Encodes a resource using the base64 algorithm synchronously using
  * client-side XMLHttpRequest.
  *
  * NOTE: we cannot use window.btoa() for some strange reasons here.
@@ -851,7 +851,7 @@ Casper.prototype.injectClientUtils = function injectClientUtils() {
  *
  * @param  String  message  The message to log
  * @param  String  level    The log message level (from Casper.logLevels property)
- * @param  String  space    Space from where the logged event occured (default: "phantom")
+ * @param  String  space    Space from where the logged event occurred (default: "phantom")
  * @return Casper
  */
 Casper.prototype.log = function log(message, level, space) {

@@ -551,7 +551,7 @@
                                     e.checked = (e.value === value);
                                 });
                             } else {
-                                out = 'Urovided radio elements are empty';
+                                out = 'Provided radio elements are empty';
                             }
                             break;
                         default:

@@ -671,7 +671,7 @@ var Tester = function Tester(casper, options) {
     };
 
     /**
-     * Render tests results, an optionnaly exit phantomjs.
+     * Render tests results, an optionally exit phantomjs.
      *
      * @param  Boolean  exit
      */
@@ -795,7 +795,7 @@ var Tester = function Tester(casper, options) {
      * file.
      *
      * @param  Error|String  error      The error
-     * @param  String        file       Test file where the error occured
+     * @param  String        file       Test file where the error occurred
      * @param  Number        line       Line number (optional)
      */
     this.uncaughtError = function uncaughtError(error, file, line) {