feat: Add readme

Author: anc95

README.md

@@ -1,2 +1,46 @@
 # golang-enum-to-ts
 Transform Golang `enum` type to Typescript enum
+
+## Function
+
+### Before (Golang)
+```golang
+package some
+
+type Status int
+
+const (
+	Todo Status = iota
+	Done
+	Pending
+	InProgress
+)
+
+type Sex string
+
+const (
+	Female Sex = "female"
+	Male   Sex = "male"
+)
+
+func Abctext() {
+	//dadsad
+}
+```
+
+### After (Typescript)
+
+```ts
+namespace some {
+  export enum Sex {
+    Female = 'female',
+    Male = 'male',
+  }
+  export enum Status {
+    Pending = 2,
+    InProgress = 3,
+    Todo = 0,
+    Done = 1,
+  }
+}
+```