Merge pull request #1 from progit/master

update
Finish the second section of chapter 2.
Update status.son
replace “你” by “您”
Update 02-git-basics/sections/recording-changes.asc
Update 02-git-basics/sections/recording-changes.asc
translated 1-git-branching.asc
Update 1-git-branching.asc

modified some mistakes
Update 02-git-basics/sections/recording-changes.asc
Update 1-git-branching.asc

modified quotes
modified some words
modified a mistake
translated the first 1/5
change the figure explanatory
translated to Switching Branches (1/2)
translated the first section -- nutshell
change the completion status
changed the translation of rebase
revision-selection 50%
revision 65%