Fix typo in example.
Rename *.exports to match their *.js counterparts.
Merge pull request #461 from marcjansen/istanbul

Fix typo in example.
More renames as suggested by @elemoine.
Merge pull request #462 from marcjansen/same-name

Rename *.exports to match their *.js counterparts.
Lowercase type in externs/bootstrap.js
Merge pull request #464 from fredj/externs-bootstrap

Lowercase type in externs/bootstrap.js