Add gitignore for bin,build,lib folders. Add plural _INCLUDE_DIRS and _LIBRARIES find cmake variables

Modified necessary files to save the headers, the library and all the related files on the subdirectory iri/<package_name>

Solved a minor bug.

Added an exception class.
Open issues: the port is not properly configured.
             errors on read and write operations are not detected.

Modified the main CMakeLists.txt to set the compiler flags for the C++ compiler instead of the C compiler.
Solved some compilation warnings that appeared.

Fixed cmake find script.