Fixed travis yml

- Fixed a couple of bugs found when trying to make ant build file to work
- Updated .gitignore to include folders created by the build xml file

- LogInSystem is now a class
- All source files are moved into src folder
- Updated README.md to reflect the codes' current progress
- renamed vehiclesData.txt to vehiclesData.json

- Fixed minor error in LogInSystem
- Added VehicleManager.cpp
- Added main.cpp where main() will be migrated to

- No compilation error
- Actual functionaility not tested yet

- Added all public functions documentation in README.md
- Fixed missing id in the original database.txt
- Fixed missing id in Person constructor

- Refactored the entire LogInSystem.cpp
- Renamed Person.h into Person.hpp
- Added "int id" into Person.hpp
- Added getter and setter for id in Person.cpp
- Updated README.md with description of each functions

- void quit() is now commented
- Added some more comments

- registration(), login(), getUser() are all commented
- registration() will now implements getUser() instead of attempting to
run its own check for existing username in use
- getUser() now does not require string since the string that is passed
is a shared variable

Segmentation fault error in login still persist.

- main() is mostly/completely commented
- Added error handling for non-expected input for ‘choice’.

- Place holders are now universalized with password & password2
- Unneeded variables removed (counter, x, pswd)
- Fixed quit() improper ofstream behavior
- Implemented while (!.empty()) instead of for loop

- Person is now used and called in LogInSystem.cpp
- A stack is introduced to handle all the users (Person)

- Unresolved “Segmentation fault : 11”

- README.md added for the project
- Person.cpp commented