Stograde

- 172 Update default StoGit URLs to reflect the new repo structure

166 165

https://github.com/StoDevX/stograde/pull/164

1. Allow the architecture to be specified for an assignment using, for example, `architecture: armv7l`

2. Allow the output name for a supporting file to be specified, i.e. using `[ 'input', 'output' ]` instead of just specifying a string

163 (continuation of 162)

162

- Renamed the project to stoGrade
- Added support for Operating Systems