Restructured CMake file to include headers, and to be better organized

CMakeLists.txt

+cmake_minimum_required(VERSION 2.6)
+
 project (YAML_CPP)
 set(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/bin)
-add_subdirectory (src)
+
+set(PUB_HDR
+	include/crt.h
+	include/emitter.h
+	include/emittermanip.h
+	include/exceptions.h
+	include/iterator.h
+	include/node.h
+	include/noncopyable.h
+	include/ostream.h
+	include/parser.h
+	include/parserstate.h
+	include/stlemitter.h
+	include/yaml.h
+)
+
+set(PVT_HDR
+	src/alias.h
+	src/content.h
+	src/emitterstate.h
+	src/emitterutils.h
+	src/exp.h
+	src/indentation.h
+	src/iterpriv.h
+	src/ltnode.h
+	src/map.h
+	src/regex.h
+	src/scalar.h
+	src/scanner.h
+	src/scanscalar.h
+	src/sequence.h
+	src/setting.h
+	src/stream.h
+	src/token.h
+)
+
+set(SRC
+	src/alias.cpp
+	src/content.cpp
+	src/emitter.cpp
+	src/emitterstate.cpp
+	src/emitterutils.cpp
+	src/exp.cpp
+	src/iterator.cpp
+	src/map.cpp
+	src/node.cpp
+	src/ostream.cpp
+	src/parser.cpp
+	src/parserstate.cpp
+	src/regex.cpp
+	src/scalar.cpp
+	src/scanner.cpp
+	src/scanscalar.cpp
+	src/scantoken.cpp
+	src/sequence.cpp
+	src/simplekey.cpp
+	src/stream.cpp
+)
+
+include_directories(${YAML_CPP_SOURCE_DIR}/include)
+add_library(yaml-cpp
+	${PUB_HDR}
+	${PVT_HDR}
+	${SRC}
+)
+
 add_subdirectory (yaml-reader)

src/CMakeLists.txt

-set(FILES alias.cpp content.cpp iterator.cpp node.cpp parserstate.cpp
-          scalar.cpp scanscalar.cpp sequence.cpp stream.cpp
-          exp.cpp map.cpp parser.cpp regex.cpp scanner.cpp
-          scantoken.cpp simplekey.cpp
-		  emitter.cpp emitterstate.h emitterstate.cpp emitterutils.h emitterutils.cpp
-		  ostream.cpp)
-
-include_directories(${YAML_CPP_SOURCE_DIR}/include)
-add_library(yaml-cpp ${FILES})