Add instructions for installing libLAS on OSX

These instructions are for Homebrew only. Otherwise, the reader is
directed to the compilation section.
Merge pull request #36 from gadomski/doc/osx-installation

Add instructions for installing libLAS on OSX
remove old LAStools utilities that don't belong in liblas #39
Merge pull request #40 from libLAS/remove-lastools-utilities

remove old LAStools utilities that don't belong in liblas #39
Fix 'seperator' typo, replace with 'separator'.
Merge pull request #41 from sebastic/separator-typo

Fix 'seperator' typo, replace with 'separator'.
apply fix for #37 to support reading (but not interpreting) extra bytes in files
Merge pull request #42 from libLAS/extra_bytes

apply fix for #37 to support reading (but not interpreting) extra bytes in files
increment version to 1.8.0 #35
Remove boost/cstdint.hpp usage and instead move to <stdint.h>. Turn up
the warning noise and clean up issues related to them.
Merge pull request #43 from libLAS/remove_boost_int_types

Remove boost/cstdint.hpp usage and instead move to <stdint.h>. Turn up the warning noise and clean up issues related to them.
remove liblas::guid, which was a poor implementation of boost::uuid::uuid, which is everywhere nowadays
Merge branch 'remove_guid'

Conflicts:
	include/liblas/guid.hpp
	include/liblas/header.hpp
fix line endings
finish up removing liblas::guid
clean up some more guid-related items
windows fixups
add 2012 and 2013 MSVC for CRT_SECURE defs
quote some file paths #24
add filesystem and system to Travis config