Upgraded sbt from 0.13.5 to 0.13.7

sslavic · sslavic · commit 67bf40fca32b · 2015-01-19T14:57:35.000+01:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.5
+sbt.version=0.13.7
