Update GettingStarted.mo
Update GettingStarted.mo

Updated to:
- Fix broken link to paper on LIU's website, and replaced with newer and better example.
- Updated the "future work" on integrating power flow solutions, to the work done.
- Added to list of tools that we have used with the new version succesfully. 
- Small editorial changes for clarity.
OpenIPSL/OpenIPSL