Completed getQueryPredictions implementation

[cgalvan]

Description

Completed the getQueryPredictions implementation to handle all that we currently can support.

• Added handling for bounds input
• Added unit tests that give full coverage to the places module now

Testing

Verified unit tests all pass, and now places module is 100% covered, since the getQueryPredictions API was the last remaining prototype implementation that didn't have unit tests yet.

------------------|---------|----------|---------|---------|--------------------------
File              | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
------------------|---------|----------|---------|---------|--------------------------
All files         |   88.07 |    89.23 |   86.79 |   88.14 |
 directions.ts    |    9.25 |        0 |       0 |    7.69 | 26-204
 google.maps.d.ts |       0 |        0 |       0 |       0 |
 googleCommon.ts  |     100 |      100 |     100 |     100 |
 index.ts         |     100 |      100 |     100 |     100 |
 infoWindow.ts    |     100 |      100 |     100 |     100 |
 maps.ts          |     100 |    97.26 |     100 |     100 | 105
 markers.ts       |   78.66 |    66.66 |      90 |   78.66 | 63-68,88-115,140,310-334
 places.ts        |     100 |      100 |     100 |     100 |
------------------|---------|----------|---------|---------|--------------------------

Test Suites: 6 passed, 6 total
Tests:       122 passed, 122 total

Also built/ran the examples and verified they still work as expected.