Merge pull request #19 from froksen/master

Misspelling in credits file
Use pkg-config to make compiling more platform independent.
Merge pull request #21 from Lasall/master

Use pkg-config to get compiler and linker options for libraries.
change INSTALL
change INSTALL
add Auto fps
Fixed lockFrame Method (Pausing)
Fixed it so it works propperly when pausing a recording. The frame will stay locked when the recording is paused, and only be unlocked if the user presses stop or recording fails