[it] fix error in formating
[it] fix remaining typos
[it] fix space at end of title
switch travis to parallel ci check
travis: add e-mail notification on status change
Apply 60e2618 to ja tree
Apply c418e2e to ja tree
Apply 44936fd to ja tree
Apply 3f6c105 to ja tree
Merge pull request #739 from harupong/update-ja

[ja] Update translation
[nl] Synchronized translation with SHA-1 3c18779
Merge pull request #742 from Cpt-xx/synchVersions

[nl] Synchronized translation with SHA-1 3c18779
update `git reflog` output to current one
Merge pull request #743 from daftano/en

update `git reflog` output to current one
Merge branch 'master' of github.com:daftano/progit into daftano

Conflicts:
	it/06-git-tools/01-chapter6.markdown
Bump Maruku required version to 0.7.1
updating 'git stash list' output
Merge pull request #746 from daftano/en

updating 'git stash list' output
Merge pull request #745 from daftano/master

[it] translating chapter 6