Added object files and Xcode project files to gitignore
Created Makefile from Makefile-simple
Deleted sgl local files since these files are located in source/cpp
Updated testapp.cpp to run test 1
Added Makefile

Use this Makefile to make this project. Go to testapp directory and run command: "make". To clean the project run command "make clean" from testapp directory.
Added binary file ./testapp to the gitignore.
Merge branch 'master' of https://github.com/jancajthaml/sgloi13
function parameter must be const in order to avoid linking problems.
Added build script for our application.
To compile the testapp from the source/cpp directory, just run ./build.sh. Project will compile and symlink called "testapp" in the source/cpp directory will be created. Program can be run then using the symlink.
To clean the project simply run ./build.sh clean command - the project will be cleaned and the symlink "testapp" will be deleted.