Update gradle to use LeakCanary snapshot so that leak detection works on marshmallow

app/build.gradle

@@ -86,8 +86,8 @@ dependencies {
     compile(project(':libnetcipher'))
 
     // memory leak analysis
-    debugCompile 'com.squareup.leakcanary:leakcanary-android:1.3.1'
-    releaseCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.3.1'
+    debugCompile 'com.squareup.leakcanary:leakcanary-android:1.4-SNAPSHOT'
+    releaseCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.4-SNAPSHOT'
 
     provided 'javax.annotation:jsr250-api:1.0'
 

build.gradle

@@ -12,5 +12,8 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        maven {
+            url 'https://oss.sonatype.org/content/repositories/snapshots/'
+        }
     }
 }