Update angular-spinner.js

When startactive is true. We can send a stop event before initialization. Then the spin rotates indefinitely. I deactivated the startactive during the stop event to prevent this behavior
Merge pull request #22 from vleborgne/master

Update angular-spinner.js
chore(travis): update bower to latest
docs(README): add link to online example on Plunker (fix #19)
Merge remote-tracking branch 'origin/master'
chore(*): update npm dependencies
fix(spinner): remove unnecessary call to `stop()` during spinner initialization

bug introduced by #22 and broke tests.
chore(*): release 0.5.1
added scope eval to allow for data binding support