updating chapter2

changed "we" with "I" to stay coherent with the end of the phrase.
He's talking about his own repository and his permissions.
Merge pull request #732 from daftano/en

updating chapter2
Merge pull request #731 from daftano/master

[it] update chapter 2
[it] updating chapter2

Reviewed "Fetching and Pulling from Your Remotes"
[it] changing chapter2

Reviewed "Pushing to Your Remotes"