fix: complete readme

README.md

@@ -1,2 +1,73 @@
 # VerificationCodeInput
-简洁验证码输入框，能自定义输入框个数和样式
+简洁验证码输入框，能自定义输入框个数和样式。
+# how to use
+    <com.dalimao.corelibrary.VerificationCodeInput
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            ver:box="4"
+            ver:child_h_padding="5dp"
+            android:layout_centerInParent="true"
+            android:id="@+id/verificationCodeInput"
+            android:layout_marginBottom="16dp"
+            />
+
+监听输入完成：
+
+    VerificationCodeInput input = (VerificationCodeInput) findViewById(R.id.verificationCodeInput);
+    input.setOnCompleteListener(new VerificationCodeInput.Listener() {
+          @Override
+          public void onComplete(String content) {
+             Log.d(TAG, "完成输入：" + content);
+          }
+    });
+
+你还可以为输入框定义自己的样式，指定属性 box_bg_normal 和 box_bg_focus：
+
+    <com.dalimao.corelibrary.VerificationCodeInput
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            ver:box="4"
+            ver:box_bg_normal="@drawable/verification_edit_bg_normal"
+            ver:box_bg_focus="@drawable/verification_edit_bg_focus"
+            ver:child_h_padding="5dp"
+            android:layout_centerInParent="true"
+            android:layout_marginBottom="16dp"
+            />
+
+自定义个数，指定属性  box：
+
+    <com.dalimao.corelibrary.VerificationCodeInput
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            ver:box="5"
+            ver:box_bg_normal="@drawable/verification_edit_bg_normal"
+            ver:box_bg_focus="@drawable/verification_edit_bg_focus"
+            ver:child_h_padding="5dp"
+            android:layout_centerInParent="true"
+            android:layout_marginBottom="16dp"
+            />
+
+
+＃ MIT
+
+MIT License
+
+Copyright (c) 2017 刘光利
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.