add a changelog for 3.1.2

Author: CapitanRedBeard

CHANGELOG.md

@@ -6,6 +6,25 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [3.1.2] - 2018-10-16
+
+## Added
+- Allow to set notification's priority, visibility and importance options on Android, [@lorenc-tomasz](https://github.com/lorenc-tomasz) `aaf2d19` [#854](https://github.com/zo0r/react-native-push-notification/pull/854)
+- Added the "old" GCM listener to get compatibility with GCM back, [@zo0r](https://github.com/zo0r) `3bd0b6f` [#835](https://github.com/zo0r/react-native-push-notification/pull/835)
+- Allow configuring notification channel and color through manifest, [@Truebill](https://github.com/Truebill) `f7b4759` [#822](https://github.com/zo0r/react-native-push-notification/pull/822)
+
+## Fixed
+- Fix example app cancel notification, [@hshiraiwa](https://github.com/danibonilha) `1143632` [#869](https://github.com/zo0r/react-native-push-notification/pull/869)
+- Update documentation to avoid falling Androids' build, [@danibonilha](https://github.com/danibonilha) `fc5c722` [#879](https://github.com/zo0r/react-native-push-notification/pull/879)
+- Fix react-native link command, [@lfkwtz](https://github.com/lfkwtz) `9708445` [#839](https://github.com/zo0r/react-native-push-notification/pull/839)
+- Standardize Changelog, [@rodrigobdz](https://github.com/rodrigobdz) `a95af74` [#831](https://github.com/zo0r/react-native-push-notification/pull/831)
+- Updated sdk and build tool version on gradle file, [@receme](https://github.com/receme) `8718e61` [#826](https://github.com/zo0r/react-native-push-notification/pull/826)
+- Fix requestPermissions crash, [@zo0r](https://github.com/zo0r) `feada0c` [#809](https://github.com/zo0r/react-native-push-notification/pull/809)
+- Readme clarification on localNotificationSchedule(), [@brownmagik352](https://github.com/brownmagik352) `beedb16` [#816](https://github.com/zo0r/react-native-push-notification/pull/816)
+- Fix title and message for Firebase, [@Truebill](https://github.com/Truebill) `ccd9edc` [#806](https://github.com/zo0r/react-native-push-notification/pull/806)
+- Fix pop initial for firebase, [@Truebill](https://github.com/Truebill) `b61ce08` [#807](https://github.com/zo0r/react-native-push-notification/pull/807)
+- Various readme typos, [@elitree](https://github.com/elitree) `a071458` [#802](https://github.com/zo0r/react-native-push-notification/pull/802)
+
 ## [3.1.1] - 2018-07-31
 
 ## Added
@@ -18,5 +37,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - checkPermissions (PR [#721](https://github.com/zo0r/react-native-push-notification/pull/721))
 - Remove default alert for silent push (PR [#707](https://github.com/zo0r/react-native-push-notification/pull/707))
 
-[Unreleased]: https://github.com/zo0r/react-native-push-notification/compare/v3.1.1...HEAD
+[Unreleased]: https://github.com/zo0r/react-native-push-notification/compare/v3.1.2...HEAD
+[3.1.2]: https://github.com/zo0r/react-native-push-notification/compare/v3.1.1...v3.1.2
 [3.1.1]: https://github.com/zo0r/react-native-push-notification/compare/...v3.1.1