Update to work with java 11

Signed-off-by: Chris Cromer <chris@cromer.cl>

.idea/.gitignore

@@ -0,0 +1,2 @@
+# Project exclude paths
+/.

.idea/gradle.xml

@@ -1,7 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="GradleSettings">
-    <option name="gradleHome" value="C:/Program Files (x86)/Gradle/gradle-1.0-rc-3" />
-  </component>
-</project>
-
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+</project>

.idea/misc.xml

@@ -59,7 +59,7 @@
   <component name="ProjectKey">
     <option name="state" value="project://e79810c8-c5c8-43b1-b19c-90c1f4095425" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_10" default="false" project-jdk-name="10" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="false" project-jdk-name="11 OpenJDK" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>