diff --git a/.gitignore b/.gitignore
index 64d3c97..d2a17b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,8 @@ local.properties
 
 # Proguard folder generated by Eclipse
 proguard/
+
+# Others
+.idea
+.classpath
+.project
diff --git a/project.properties b/project.properties
index d5ad9f8..3409f08 100644
--- a/project.properties
+++ b/project.properties
@@ -11,4 +11,4 @@
 #proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
 
 # Project target.
-target=Google Inc.:Google APIs:19
+target=android-20