Fixing repository links after move

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 Find an area you can help with and do it. Open source is about collaboration and open participation. Try to make your code look like what already exists and submit a pull request.
 
-The [list of issues](https://github.com/ignopeverell/grin/issues) is a good place to start, especially the ones tagged as "help wanted" (but don't let that stop you from looking at others). If you're looking for additional ideas, the code includes `TODO` comments for minor to major improvements. Grep is your friend.
+The [list of issues](https://github.com/mimblewimble/grin/issues) is a good place to start, especially the ones tagged as "help wanted" (but don't let that stop you from looking at others). If you're looking for additional ideas, the code includes `TODO` comments for minor to major improvements. Grep is your friend.
 
 Additional tests are rewarded with an immense amount of positive karma. So is documentation.
 

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/ignopeverell/grin.svg?branch=master)](https://travis-ci.org/ignopeverell/grin) [![Gitter chat](https://badges.gitter.im/grin_community/Lobby.png)](https://gitter.im/grin_community/Lobby)
+[![Build Status](https://travis-ci.org/mimblewimble/grin.svg?branch=master)](https://travis-ci.org/mimblewimble/grin) [![Gitter chat](https://badges.gitter.im/grin_community/Lobby.png)](https://gitter.im/grin_community/Lobby)
 
 # Grin
 

doc/build.md

@@ -29,7 +29,7 @@ In order to compile and run Grin on your machine, you should have installed:
 
 ### Clone Grin
 
-    git clone https://github.com/ignopeverell/grin.git
+    git clone https://github.com/mimblewimble/grin.git
 
 ### Build Grin