Add eclipse plugin and update .gitignore

.gitignore

@@ -1,4 +1,7 @@
 .DS_Store
 .gradle/
 build/
-*.i*
+*.i*
+.classpath
+.project
+.settings

build.gradle

@@ -2,6 +2,7 @@ apply plugin: "base"
 
 allprojects {
   apply plugin: "idea"
+  apply plugin: "eclipse"
   apply plugin: "maven"
 
   group = "org.springframework.data"
@@ -100,4 +101,4 @@ idea {
       }
     }
   }
-}
+}