Shifting to `caktin tools` for building the repo

[Mayankm96]

This refers to the project mentioned in #8.

I have been using catkin tools for a while now and I think it it is way better than the catkin_make that we use. Thus, I think it is better if we check that all current packages can be built using catkin build and use catkin tools in future. There might be a few build issues that would need to be resolved but they can be fixed in the CMakeLists of those packages.

Overview: https://catkin-tools.readthedocs.io/en/latest/
Step-by-Step Instructions: http://catkin-tools.readthedocs.io/en/latest/migration.html#step-by-step-migration

Also, the Travis configuration and README have to be changed accordingly.

[7ayushgupta]

@Mayankm96 are you doing this? Or should I try it?

[Mayankm96]

@7ayushgupta You can do it. It's fairly simple.