add links to spec

Author: Lingdong Huang

README.md

@@ -115,7 +115,7 @@ Please refer to [Browser Runtime](./documentation/Runtime.md)
 
 ## Syntax Cheatsheet
 
-A context-free grammar description is under construction. Meanwhile, please check the cheatsheet below, or look into `src/parser.js` to learn about the syntax. Be sure to check out the examples from the online IDE too!
+You can find the Language Specification [here](https://wy-lang/spec) (WIP). To get started, you can also check the cheatsheet below, or look into `src/parser.js` to learn more. Be sure to check out the examples from the online IDE too!
 
 ### Variables
 

static/assets/site.css

@@ -137,7 +137,7 @@ h2{
 .big-btn{
   border: 1px solid black;
   border-left: 5px solid black;
-  margin: 20px;
+  margin: 15px;
   display:inline-block;
   padding: 10px 25px 10px 25px;
   cursor: pointer;

static/index.html

@@ -61,10 +61,11 @@ <h1>Compilation</h1>
 
   <h1>Get</h1>
 
-  <span class="big-btn" onclick="window.location.href='https://github.com/LingDong-/wenyan-lang'">SOURCE CODE (GITHUB)</span>
+  <span class="big-btn" onclick="window.location.href='https://github.com/LingDong-/wenyan-lang'">GITHUB</span>
   <span class="big-btn" onclick="window.location.href='./ide.html'">ONLINE EDITOR</span>
+  <span class="big-btn" onclick="window.location.href='./spec.html'">LANGUAGE SPEC</span>
   <span class="big-btn" onclick="window.location.href='https://github.com/LingDong-/wenyan-lang#syntax-cheatsheet'">REFERENCE</span>
-  
+
   <div style="height:180px;"></div>
 
   </div>