Add contribution guide for writing roadmap

contributing/roadmap.md

@@ -1 +1,34 @@
 # Submitting a new roadmap
+
+First of all thank you for considering to contribute to this project. It wouldn't have been possible for us to keep it live without your contributions 🙏
+
+> This process will be automated soon. Follow the steps listed below in order to add a new roadmap for now
+  
+* Fork this repository
+* If you haven't contributed to this project before then create your author profile
+  * Open the file [authors.json](../content/authors.json)
+  * Put your preferred `username`
+  * Put a profile picture in [authors directory](../public/authors) with the username  
+* Create a new directory for the roadmap inside the [roadmaps directory](../content/roadmaps) by following the below steps:
+  * Directory name must be `kebab-cased` and prefixed with the incremental number e.g. `6-java-developer`
+  * Create a markdown file `6-java-developer/0-About/0-Summary.md` inside this directory and write the article detailing the steps required for this path. It doesn't have to be graphic like the other roadmaps; just focus on writing a detailed but approachable textual guide. 
+  * Create a file `meta.json` inside the roadmap directory with the content below:
+  ```json
+  {
+    "title": "Java Developer",
+    "description": "Step by step guide to becoming a modern Java Developer",
+    "featuredDescription": "Step by step guide to becoming a modern Java Developer in 2020",
+    "author": {
+      "name": "Your Name",
+      "url": "https://twitter.com/twitter"
+    },
+    "featured": false,
+    "detailed": false,
+    "versions": []
+  }
+  ```
+* Once done, run the below command:
+  ```shell
+  yarn meta:roadmaps
+  ```
+* Commit, push and open a pull request 

pages/roadmaps.js

@@ -24,10 +24,10 @@ const RoadmapsList = () => (
         title={PageTitle}
         subtitle={PageDescription}>
         <BadgesList className="mt-4">
-          <BadgeLink href={`${siteConfig.url.issue}?title=[RequestRoadmap] - Title Here`} target="_blank">
+          <BadgeLink href={siteConfig.url.addRoadmap} target="_blank">
             <SecondaryBadge>
               <FontAwesomeIcon icon={faCodeBranch}/>
-              Request a Roadmap
+              Write a Roadmap
             </SecondaryBadge>
           </BadgeLink>
           <BadgeLink href="/signup">