Update README.md

README.md

@@ -3,14 +3,19 @@
 You can download these CAD models and 3D print it to make the drone.
 ![2_6a_cad_hexa](https://user-images.githubusercontent.com/2436747/48283620-57be9780-e45d-11e8-9420-cb07e5a26943.jpg)
 
+# Gripper System
 The Gripper system consists of two claws as shown here.
 ![2_5a_gripper](https://user-images.githubusercontent.com/2436747/48283385-a7509380-e45c-11e8-900e-4fdfcf4d2cae.png)
 
+#FEA analysis
 The CAD models were also tested for FEA
     ![2_3_fea](https://user-images.githubusercontent.com/2436747/48283387-a7e92a00-e45c-11e8-922d-2ca9dae2e049.png)
 
+# Citations
 If you used this code, kindly consider citing the [paper]:
 E. Andersson and A. Bogga, ‘Hexacopter with gripping module’, Bachelor's Dissertation, Halmstad University, Sweden 2018.
 
 [paper]: http://www.diva-portal.org/smash/get/diva2:1216528/FULLTEXT02.pdf
 
+# License
+Distributed with a GNU GENERAL PUBLIC LICENSE.