Merge branch 'release/v0.4.0'

Conflicts:
	README.md

Author: edwardsamuel

.yardopts

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+--hide-void-return
+--no-private
+--verbose
+--markup-provider=redcarpet
+--markup=markdown
+lib/**/*.rb
+-
+README.md
+CHANGELOG.md
+CODE_OF_CONDUCT.md
+LICENSE

CHANGELOG.md

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+# Changelog
+
+## 0.4.0
+
+* Use required positional and optional named parameters (_breaking changes_)
+* Documentation with examples
+* Documentation using markdown syntax
+* Use OpenSSL instead Ruby-HMAC to sign url
+* Customizeable HTTP client
+* Fix QPS bug: ensure number of queue items is the given value
+
+## 0.3.0
+
+* QPS: Query per second
+* Refactor lib
+
+## 0.2.0
+
+* Support Ruby >= 2.0.0
+* Auto-retry connection when the request is failed and possible
+* Restructure test (rspec) directory
+* Refactor lib
+
+## 0.1.0
+
+* Initial release.
+* Support Ruby >= 2.2
+* [Google Maps Web Service API](https://developers.google.com/maps/documentation/webservices/) scope:
+    - [Directions API](https://developers.google.com/maps/documentation/directions/)
+    - [Distance Matrix API](https://developers.google.com/maps/documentation/distancematrix/)
+    - [Elevation API](https://developers.google.com/maps/documentation/elevation/)
+    - [Geocoding API](https://developers.google.com/maps/documentation/geocoding/)
+    - [Time Zone API](https://developers.google.com/maps/documentation/timezone/)
+    - [Roads API](https://developers.google.com/maps/documentation/roads/)