set max heap to 4g in gradle.properties

Author: davidmoten

gradle.properties

@@ -16,7 +16,7 @@
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
-org.gradle.jvmargs=-XX:MaxPermSize=512m
+org.gradle.jvmargs=-XX:MaxPermSize=512m -Xmx4g
 
 mavenRepoUrl         = https://api.bintray.com/maven/microsoftgraph/Maven/msgraph-sdk-android
 mavenGroupId         = com.microsoft.graph
@@ -32,4 +32,4 @@ nightliesUrl         = http://dl.bintray.com/MicrosoftGraph/Maven
 #ex: C:\Users\username\.gradle\gradle.properties
 ClientId="CLIENT_ID"
 Username="USERNAME"
-Password="PASSWORD"
+Password="PASSWORD"