Fixed #856 Can not save content correctly after "[self stopEditing]" was called if I used "[self setBodyText:]" method.

[adrianmcgee]

Fixed this issue by putting the tool into non-edit mode on viewdidload.

I found the ‘Edit’ bar button to be confusing as it’s title doesn’t update based on it’s state. I have fixed that.

[adrianmcgee]

This is my first pull request so if I've done anything incorrectly please let me know :-) Thanks

[diegoreymendez]

@adrianmcgee - Can you describe the original issue in detail, with a step by step to reproduce the issue you were seeing?

This is the best way for us to evaluate and test this PR. Thanks!