Restructure the code for easy import

.gitignore

@@ -0,0 +1,18 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+vendor/
+
+# JetBrains project configuration
+.idea/

Gopkg.toml

@@ -0,0 +1,46 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/comail/colog"
+
+[[constraint]]
+  name = "github.com/julienschmidt/httprouter"
+  version = "1.3.0"
+
+[[constraint]]
+  branch = "master"
+  name = "k8s.io/api"
+
+[[constraint]]
+  name = "k8s.io/kubernetes"
+  version = "1.16.3"
+
+[prune]
+  go-tests = true
+  unused-packages = true

README.md

@@ -3,12 +3,12 @@ This is an example of [Kubernetes Scheduler Extender](https://github.com/kuberne
 
 ## How to
 
-### 0. checkout the repo
+### 0. checkout the repo and make sure you have [`dep` installed](https://golang.github.io/dep/docs/installation.html).
 
 ```shell
 $ git clone [email protected]:everpeace/k8s-scheduler-extender-example.git
 $ cd k8s-scheduler-extender-example
-$ git submodule update --init
+$ dep ensure
 ```
 
 ### 1. buid a docker image
@@ -60,6 +60,16 @@ Events:
   Normal  Started                8s    kubelet, minikube  Started container
 ```
 
+## Code changes
+@wangchen615 helped 
+- restructure the code to wrap all shared functions and variables into a package `k8s-scheduler-extender`.
+- use `dep` instead of `mod` to manage dependencies
+
+### Use of the package `k8s-scheduler-extender`
+```
+import "github.com/everpeace/k8s-scheduler-extender-example/k8s_scheduler_extender"
+```
+The `main.go` is an example extender revised using the above reference.
 
 ## License
 
@@ -78,3 +88,8 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 ```
+
+
+## Used packages
+The dependency graph of all packages used can be found below.
+![](dep.png)