Changes .gitignore file so git ignores any directory which name starts with 'build'.
Removes the cpack part of the CMakeLists.txt
Creates a INSTALL.md file with info on intallation process.
Modifies README.md. now the install info is on INTALL.md.
Created a changelog file to store the lit of changes between different versions.
Adds cross-platform stuff into the FindConfigPackage.cmake module.
Minor changes in the config_header_in template to adjust to the changes in the FindConfigPackage.cmake module.