refs #20: refactor install steps.

Signed-off-by: Eric Wang <skygragon@gmail.com>

Author: skygragon

.gitignore

@@ -38,3 +38,4 @@ jspm_packages
 
 tmp/
 .DS_Store
+.env.json

bin/install

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+ENVFILE=.env.json
+
+check() {
+  printf "Checking $1 ... "
+  $1 --version > /dev/null 2>&1
+  if [ $? != 0 ]; then
+    echo "No"
+    echo "[ERROR] Missing $1!"
+    exit 1;
+  fi
+  echo "Yes"
+}
+
+create() {
+  cat << EOF > $1
+{
+  "commit": {
+    "full": "`git rev-parse HEAD`",
+    "short": "`git rev-parse --short HEAD`"
+  },
+  "node": "`node -v`",
+  "npm": "`npm -v`"
+}
+EOF
+}
+
+check git
+check node
+check npm
+
+create $ENVFILE
+
+npm install
+echo "You might need root privilege to install globally ... "
+sudo npm install -g .
+
+rm $ENVFILE
+
+echo "leetcode-cli successfully installed."

bin/prepare

@@ -26,7 +26,7 @@ Choose one of the following ways to install leetcode-cli:
 **From source code**
 
     $ git clone http://github.com/skygragon/leetcode-cli
-    $ cd leetcode-cli && npm install && sudo npm install -g --unsafe-perm .
+    $ cd leetcode-cli && ./bin/install
 
 Then verify the result:
 

docs/install.md

@@ -8,8 +8,7 @@
   },
   "scripts": {
     "lint": "eslint lib/ test/",
-    "test": "npm run lint && nyc mocha test/",
-    "prepare": "./bin/prepare"
+    "test": "npm run lint && nyc mocha test/"
   },
   "repository": {
     "type": "git",