diff --git a/.gitattributes b/.gitattributes
index 5f0e4fd..d43a208 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,3 @@
 *.sh text eof=lf
 gradlew text eof=lf
+*.iml
diff --git a/gradle/hellomuni/build.gradle b/gradle/01-hello-muni/build.gradle
similarity index 100%
rename from gradle/hellomuni/build.gradle
rename to gradle/01-hello-muni/build.gradle
diff --git a/gradle/hello-with-wrapper/src/main/cpp/hellomuni.cpp b/gradle/01-hello-muni/src/main/cpp/hellomuni.cpp
similarity index 100%
rename from gradle/hello-with-wrapper/src/main/cpp/hellomuni.cpp
rename to gradle/01-hello-muni/src/main/cpp/hellomuni.cpp
diff --git a/gradle/hello-with-wrapper/build.gradle b/gradle/02-hello-muni-with-gradle-wrapper/build.gradle
similarity index 100%
rename from gradle/hello-with-wrapper/build.gradle
rename to gradle/02-hello-muni-with-gradle-wrapper/build.gradle
diff --git a/gradle/hello-with-wrapper/gradle/wrapper/gradle-wrapper.jar b/gradle/02-hello-muni-with-gradle-wrapper/gradle/wrapper/gradle-wrapper.jar
similarity index 100%
rename from gradle/hello-with-wrapper/gradle/wrapper/gradle-wrapper.jar
rename to gradle/02-hello-muni-with-gradle-wrapper/gradle/wrapper/gradle-wrapper.jar
diff --git a/gradle/hello-with-wrapper/gradle/wrapper/gradle-wrapper.properties b/gradle/02-hello-muni-with-gradle-wrapper/gradle/wrapper/gradle-wrapper.properties
similarity index 100%
rename from gradle/hello-with-wrapper/gradle/wrapper/gradle-wrapper.properties
rename to gradle/02-hello-muni-with-gradle-wrapper/gradle/wrapper/gradle-wrapper.properties
diff --git a/gradle/hello-with-wrapper/gradlew b/gradle/02-hello-muni-with-gradle-wrapper/gradlew
similarity index 100%
rename from gradle/hello-with-wrapper/gradlew
rename to gradle/02-hello-muni-with-gradle-wrapper/gradlew
diff --git a/gradle/hello-with-wrapper/gradlew.bat b/gradle/02-hello-muni-with-gradle-wrapper/gradlew.bat
similarity index 100%
rename from gradle/hello-with-wrapper/gradlew.bat
rename to gradle/02-hello-muni-with-gradle-wrapper/gradlew.bat
diff --git a/gradle/hellomuni/src/main/cpp/hellomuni.cpp b/gradle/02-hello-muni-with-gradle-wrapper/src/main/cpp/hellomuni.cpp
similarity index 100%
rename from gradle/hellomuni/src/main/cpp/hellomuni.cpp
rename to gradle/02-hello-muni-with-gradle-wrapper/src/main/cpp/hellomuni.cpp