Merge pull request #69 from samoht/master

Better View.merge + allow to not call `dot` on `irmin dump`
Merge pull request #70 from samoht/master

prepare the release
Fix build of examples for latest ocamlfind package names
Merge pull request #77 from avsm/fix-examples

Fix build of examples for latest ocamlfind package names
Remove confusing Makefile in examples/

They are built using the main _oasis file
Fix the HTTP server service display

Fix #78
Merge branch 'master' of github.com:mirage/irmin

Conflicts:
	examples/Makefile