movies example, more docs, ServiceException.getMessage() now returns the causes message
more docs, removed PendingIntent argument type from mechops since it is of type Parcelable anyway
refactored operation manager to use code rather than id to remove ambiguity between user-provided operation identifiers from operation ids
completed preliminary docs, fixes #74
added install nag to mechnet docs
Merge pull request #89 from fluxtah/master

tweaks + docs