Update changes file with recent modifications

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Changes

@@ -1,5 +1,18 @@
 Revision history for Selenium-Remote-Driver
 
+0.2150 10-10-2014
+        [NEW FEATURES]
+        - Improved error messaging for Saucelabs non-json cases
+        - Improved error messaging for incorrectly configured chromedrivers
+
+        [MAINTENAINCE]
+        - Specify minimum compatible version of Moo dep
+        - Make Driver.pm more easily subclassed ( ea68e06, 63e78e3 )
+        - Get TravisCI passing again
+
+        [BREAKING]
+        - get|set_speed subs are no-ops and will be removed in the upcoming release
+
 0.2102 7-16-2014
         [NEW FEATURES]
         - Add inner_window_size sub and hash key option to accomodate S-R-D-UserAgent use