[docs] Modify .gitignore
[docs] Modify .gitignore

Modified .gitignore to ignore Capstone project related binary and
other intermediate files generated by build.

Signed-off-by: Raghavendra Manjegowda <2bd7ca8ef4edf341b0f04ab95b9c3490b44fd26d@gmail.com>

Raag079/self-driving-car,Raag079/self-driving-car,Raag079/self-driving-car,Raag079/self-driving-car,Raag079/self-driving-car,Raag079/self-driving-car