Experience with GitHub & Git

[nike0good]

• [x] Fork the GSoC-pgRouting repository
• [x] activate issues in your fork
• [x] open an issue in your fork and put this content on the issue
• [x] Clone your fork repository in your computer
• [x] Create remote named upstream pointing to https://github.com/pgRouting/GSoC-pgRouting
• [x] checkout to the develop branch of upstream
• [x] create new branch with name <your-git-nick>-test
• [x] Edit doc/src/pgRouting-introduction.rst and put your name on contributor
• [x] push the newly created branch with the change
• [x] Create a pull request to https://github.com/pgRouting/GSoC-pgRouting
• [x] put link of the PR and of the issue on a comment on the issue you created on GSoC-pgRouting repository