Merge pull request #22 from BaltoRouberol/master

English corrections
Update tutorial.md

Fixed 'a collection of subtasks whose and' to 'a collection of subtasks which are' on line 56.
Merge PR.
Merge pull request #23 from iepathos/patch-1

Update tutorial.md
Merge 2nd PR.
Adjust CSS: enable bulleted lists in text body, do not change TOC style.
Consolidate section about multiprocessing.
Change cooperative subprocess example.
Merge pull request #25 from jgehrcke/mpissues

Consolidate section about multiprocessing
Merge branch 'master', remote-tracking branch 'origin'
Rebuild per PR from @jgehrcke
Merge remote-tracking branch 'origin/subprocessexample'

Conflicts:
	tutorial.md
Rebuild.
Fix a typo
Merge pull request #28 from zr40/patch-1

Fix a typo
Typo in comment
Merge pull request #29 from simonhayward/patch-1

Typo in comment
remove trailing whitespace
minor spelling mistake and grammar
Merge pull request #31 from AJamesPhillips/master

minor spelling mistake and grammar