chore: prepare for 0.18.0

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ### next
 
+### 0.18.0
+
 * Add `getBatteryLevel` (https://github.com/rebeccahughes/react-native-device-info/pull/359)
 
 ### 0.17.4

RNDeviceInfo.podspec

 Pod::Spec.new do |s|
   s.name         = "RNDeviceInfo"
-  s.version      = "0.17.4"
+  s.version      = "0.18.0"
   s.summary      = "Device Information for react-native"
 
   s.homepage     = "https://github.com/rebeccahughes/react-native-device-info"