Bump version to 1.7.0 (#562)

android/app/build.gradle

@@ -102,7 +102,7 @@ android {
         minSdkVersion 21
         targetSdkVersion 27
         versionCode VERSIONCODE as Integer
-        versionName "1.6.1"
+        versionName "1.7.0"
         ndk {
             abiFilters "armeabi-v7a", "x86"
         }

ios/RocketChatRN/Info.plist

@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.6.1</string>
+	<string>1.7.0</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleURLTypes</key>