Initial src and test folder

.
├── src
│   ├── JSON2C.c
│   └── JSON2C.h
└── test
    ├── .gitignore
    ├── Makefile
    ├── sample.json
    └── test.c
[Test] Implement function to read file and convert to string

 * convertFileToString
[Test] define FALSE, TRUE, DEBUG, and implement function to show HEX array

* printHexArray