Readme.md: Add setup instructions.

Author: taranjeet

README.md

@@ -1,2 +1,24 @@
 # gradeup.github.io
 Engineering Blog
+
+
+### How to Setup ?
+
+First make sure that ruby(version > 2.0) is installed on your system. To check if ruby is installed simply type
+
+```
+ruby -v
+```
+
+Now install jekyll and github-pages gem after ruby is installed.
+
+```
+sudo gem install jekyll
+sudo gem install github-pages
+```
+
+To run server, simply write
+
+```
+jekyll serve
+```