fix tag name

Unowned unsafe (#4)

creat xcodeproj to pass coverage layout to codecov

All badge works includes codecov, WIP on rich README

v0.4

delete *coverage

test cov ok

Test apply unowned (#2)

* unowned description pass

* init by optional

* add test case: test sequence, test equal

* optional to optional equal will not call

* apply unowned for == , != with weak

* rewrite Weak description for test

v0.1

edit travis