Updated build procedure.

[kingtaurus]

This fixes issue #22 [minor] Use the available packaged libraries for libedit. Possible issues with this pull request - there can be a conflict with libbsd:i386 and libbsd:amd64 (there is a collision between the contents of the packages in some versions associated 14.04). In addition there are a few additional packages that have to be installed.

README.md: (1) Added additional set of packages to be installed; This includes libedit, ncurses, gcc-dev libraries;

src/CMakeLists.txt: (1) Removed the inclusion of libedit (within the repository); (2) Added simple cmake finding of the libraries necessary to build voglperf;

DELETED src/libedit-3.1/ (1) No longer needed;

NOTE: The license should be the same.[Hopefully someone can verify this];

[JonnyJD]

Thanks, I am successfully using this patch on the package on Arch Linux, originally as a fix to this problem:

src/voglperf-0.2/src/libedit-3.1/lib/x86_64-linux-gnu/libedit.a(el.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC

Maybe google will lead people here when they have the same problem. Note that the second patch from #10 is also necessary when patching the 0.2 release.