Update projects.html

Author: dlech

projects.html

@@ -13,6 +13,9 @@
             <p>
                 This is where we keep a collection of all the projects that people are working on using ev3dev. We invite you to click through the links below to see what cool stuff ev3dev can do!
             </p>
+            <p>
+                Would you like your project added to the list? We would! <a href="https://github.com/ev3dev/ev3dev/wiki/Posting-A-Project">Create a page and send us a pull request.</a>
+            </p>
             <ul id="projects-list">
                 {% for post in site.posts %}
                     {% if post.categories.first == "projects" %}