Merge pull request #2 from takumi314/update-doc-usage-installation

Update README.md

Author: takumi314

README.md

@@ -2,10 +2,25 @@
 The Command Line Interface (CLI) for applying PKCS #12 file (.p12) with its password, automatically to store the extracted identity in the keychain.
 
 ## Installation
-...
+
+```shell
+$sh install.sh
+```
 
 ## Usage
-...
+
+**実行例**
+```bash
+$ p12_importer --p12 ~/hoge.p12 --password ******
+```
+
+**コマンド引数**
+```shell
+Options:
+    --help [default: ] - help
+    --password [default: ] - give its password if p12 file is password protected.
+    --p12 [default: ] - give p12 file path
+```
 
 ### Options
 

install.sh

@@ -1,3 +1,5 @@
+#!/bin/sh
+
 cp -f .build/release/p12_importer /usr/local/bin/p12_importer
 
 if [[ -e /usr/local/bin/p12_importer ]]; then