Update BreakingChanges.md

Author: katmsft

BreakingChanges.md

@@ -1,4 +1,4 @@
-Tracking Breaking changes in 0.11.1
+Tracking Breaking changes in 0.12.0
 
 * Moved `getMetadataArray` and `validateMetadata` from ServiceRestProxy.php to Utilities.php
 * Refined return type of the following API calls, to be more reasonable.
@@ -18,4 +18,4 @@ ALL
 * When set metadata operations contains invalid characters, it throws a ServiceException with 400 bad request error instead of Http_Request2_LogicException.
 
 BLOB
-* MicrosoftAzure\Storage\Blob\Models\Blocks.setBlockId now requires a base64 encoded string.
+* MicrosoftAzure\Storage\Blob\Models\Blocks.setBlockId now requires a base64 encoded string.