update build script

README.md

@@ -1,6 +1,13 @@
-YTCget
-------
+YTCget — Show YouTube video cover
+=================================
 ![Preview](preview.png)  
 
 **Thanks:**
 + @takien: for [youtubeID.js](https://gist.github.com/takien/4077195) script.
+
+Build
+-----
+
+**Requirements:**
+
+* [minify-html](https://github.com/wilsonzlin/minify-html/)

make_dist.sh

@@ -1,8 +1,12 @@
-#!/bin/sh
+#!/bin/bash
 
 echo -e "Making \033[0;31mYTCget\033[0m dist..."
 
-if [ -d "./dist" ]; then
+if [ ! -d "./dist" ]; then
+    echo -e "Make \033[0;31m./dist/\033[0m directory."
+    mkdir "./dist/"
+fi
+
 echo -en "Cleaning \033[0;31m./dist/\033[0m directory..."
 rm -rf "./dist/*"
 echo " Complete!"
@@ -28,7 +32,3 @@ if [ -d "./dist" ]; then
 echo -en "Making \033[0;31mytcg-$GIT_COMMIT_HASH.tar.xz\033[0m file..."
 tar -cJf "ytcg-$GIT_COMMIT_HASH.tar.xz" ./dist/*
 echo " Complete!"
-else
-    echo -e "Make \033[0;31m./dist/\033[0m directory."
-    mkdir "./dist/"
-fi