Update names in README.md and CONTRIBUTORS.md

Author: althonos

CONTRIBUTORS.md

@@ -6,7 +6,7 @@ Many thanks to the following developers for contributing to this project:
 - [C. W.](https://github.com/chfw)
 - [Diego Argueta](https://github.com/dargueta)
 - [Geoff Jukes](https://github.com/geoffjukes)
-- [Giampaolo](https://github.com/gpcimino)
+- [Giampaolo Cimino](https://github.com/gpcimino)
 - [Justin Charlong](https://github.com/jcharlong)
 - [Louis Sautier](https://github.com/sbraz)
 - [Martin Larralde](https://github.com/althonos)

README.md

@@ -95,10 +95,11 @@ The following developers have contributed code and their time to this projects:
 
 - [Will McGugan](https://github.com/willmcgugan)
 - [Martin Larralde](https://github.com/althonos)
-- [Giampaolo](https://github.com/gpcimino)
+- [Giampaolo Cimino](https://github.com/gpcimino)
 - [Geoff Jukes](https://github.com/geoffjukes)
 
-See CONTRIBUTORS.md for a full list of contributors.
+See [CONTRIBUTORS.md](https://github.com/PyFilesystem/pyfilesystem2/blob/master/CONTRIBUTORS.md)
+for a full list of contributors.
 
 PyFilesystem2 owes a massive debt of gratitude to the following
 developers who contributed code and ideas to the original version.