dept readme add

Author: PranavGPR

src/pages/Department/README.md

@@ -1,3 +1,12 @@
 ## Departments
 
-    This page 
+    This page shows the departments in BIT Campus. Click on each department to know about them.
+
+### Card function
+
+    The card function is used to create each and every card in this page. The parameters passed on to this function are:
+
+        1) name (Name to be displayed on card)
+        2) image (Image to be displayed on card)
+        3) link (Link to the page when it is clicked)
+        4) ...(Spread Operator to cover other props given to the card component in the exporting function)