Make circle publish snapshots.

build.gradle

     repositories {
         maven {
             name 'snapshots'
-            url 'http://artifactory.dmdirc.com/artifactory/repo'
+            url 'http://artifactory.dmdirc.com/artifactory/snapshots'
+            credentials {
+                username System.getenv('ARTIFACTORY_USER')
+                password System.getenv('ARTIFACTORY_PASSWORD')
+            }
         }
     }
 }

circle.yml

     - ./gradlew test
   post:
     - ./gradlew jacocoTestReport coveralls
+
+deployment:
+  snapshots:
+    branch: master
+    owner: DMDirc
+    commands:
+      - ./gradlew publishSnapshot