Update README and CONTRIBUTING ROBODoc --> FORD

Author: zbeekman

CONTRIBUTING.md

@@ -90,7 +90,7 @@ git rebase upstream/master
 - Please adhere to the code indentation and formatting as it currently exists, aligning common elements vertically, etc. Tab characters are not allowed. Indentations should be done with *4* space characters.
 - *Do NOT* allow your editor to make a bunch of indentation or white space changes, that will introduce non-substantive changes on lines that you have not actually edited.
 - The coding style is modern free-form Fortran, consistent with the Fortran 2008 standard.  Note that the two supported compilers (ifort and gfortran) do not currently include the entire Fortran 2008 standard. Therefore, only those language features supported by Gfortran 4.9 and Intel 13.1.0 are currently allowed.  This also means that previous versions of these compilers are not supported, and major changes to the code to support earlier compilers (or Fortran 95) will not be accepted.  At some point in the future (when compiler support has improved), all Fortran 2008 features will be allowed.
-- All subroutines and functions *must* be properly documented.  This includes useful inline comments as well as comment blocks using the [ROBODoc](http://rfsber.home.xs4all.nl/Robo/manual.html) syntax.
+- All subroutines and functions *must* be properly documented.  This includes useful inline comments as well as comment blocks using the [FORD](https://github.com/cmacmackin/ford/wiki/Writing-Documentation) syntax.
 - For simplicity, json-fortran currently consists of one module file. It is not envisioned that it will ever need to expand to include multiple files (if it does, there would need to be a very good reason).
 
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README.md

@@ -276,7 +276,7 @@ The code above produces the file:
 Documentation
 --------------
 
-The API documentation for the latest release version can be found [here](http://jacobwilliams.github.io/json-fortran).  The documentation can also be generated by processing the source files with [RoboDoc](http://rfsber.home.xs4all.nl/Robo/).  Note that both the shell script, CMake, and SCons will also generate these files automatically in the documentation folder, assuming you have RoboDoc installed.
+The API documentation for the latest release version can be found [here](http://jacobwilliams.github.io/json-fortran).  The documentation can also be generated by processing the source files with [FORD](https://github.com/cmacmackin/ford).  Note that both the shell script, CMake, and SCons will also generate these files automatically in the documentation folder, assuming you have FORD installed.
 
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 Contributing [![Ready in backlog](https://badge.waffle.io/jacobwilliams/json-fortran.png?label=Ready&title=Ready)](CONTRIBUTING.md)