Upgrade gradle-bintray-plugin

build.gradle

@@ -10,7 +10,7 @@ buildscript {
         //Gradle Android Maven plugin
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.0'
         //Gradle Bintray Plugin
-        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
+        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.0'
     }
 }