Updated bitly link to master firmware

README.md

@@ -21,7 +21,7 @@ Grbl includes full acceleration management with look ahead. That means the contr
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 _**Master Branch:**_
-* [Grbl v0.9g Atmega328p 16mhz 115200baud](http://bit.ly/1Bfza9D) (Last updated: 2014-08-17)
+* [Grbl v0.9g Atmega328p 16mhz 115200baud](http://bit.ly/1m8E1Qa) (Last updated: 2014-08-17)
   - **IMPORTANT INFO WHEN UPGRADING TO GRBL v0.9g:** 
     - Baudrate is now 115200 (Up from 9600). 
     - Settings WILL be overwritten. Please make sure you have a backup. Also, settings have been renumbered and some have changed how they work. See our [Configuring v0.9 Wiki page](https://github.com/grbl/grbl/wiki/Configuring-Grbl-v0.9) for details.