Matt Bierner e44d419c90 Add Log for When Typings Installer Finishes Updating the Types Registry
**Bug**
While investigating #15301, I was confused by the typing installer's log `Updating types-registry npm package...`. This was often the last line of the log file, leading me to believe that the types-registry update was still ongoing

**Fix**
Add an extra log for when the type-registry update completes successfully
2017-05-04 20:04:46 -07:00
..
2017-04-20 18:55:15 -07:00
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2017-04-04 15:51:13 -07:00
2017-04-04 15:51:13 -07:00