bridge-infinite-wait/example.py: Fix spelling/grammar issue
bridge-dial/example.py: Add a dial example for Python
Merge branch 'master' into dial
Update bridge-dial/example.py

Add some additional error handling, and dispose of bridges
when either channel leaves the application.
Merge pull request #5 from matt-jordan/dial



bridge-dial/example.py: Add a dial example for Python

This adds a simple dial example for Python. It follows closely with the
JavaScript version, with a few minor differences (such as using ring
instead of playback).