Change http://bit.ly/phet-html5-development-overview to https://githu…

…b.com/phetsims/phet-info/blob/master/doc/phet-development-overview.md, see phetsims/phet-info#120

README.md

@@ -7,7 +7,7 @@ at the University of Colorado Boulder.
 *This simulation is under development and has not been published.*
 
 ### Documentation
-The <a href="http://bit.ly/phet-html5-development-overview" target="_blank">PhET Development Overview</a> is the most complete guide to PhET Simulation
+The <a href="https://github.com/phetsims/phet-info/blob/master/doc/phet-development-overview.md" target="_blank">PhET Development Overview</a> is the most complete guide to PhET Simulation
 Development. This guide includes how to obtain simulation code and its dependencies, notes about architecture & design, how to test and build
 the sims, as well as other important information.