Tweak documentation, install docs & licenses

CMakeLists.txt

@@ -12,11 +12,13 @@ IF(SYSTEMWIDE)
 	SET(DATAROOTDIR "${CMAKE_INSTALL_PREFIX}/share" CACHE STRING "Root directory for data files")
 	SET(DATADIR "${DATAROOTDIR}/hoverboard" CACHE STRING "Where to install data files")
 	SET(DESKTOPDIR "${DATAROOTDIR}/applications" CACHE STRING "Where to install .desktop file")
+	SET(DOCSDIR "${DATAROOTDIR}/doc/hoverboard" CACHE STRING "Where to install documentation")
 ELSEIF(STANDALONE)
 	SET(BINDIR "." CACHE STRING "Where to install binaries")
 	SET(DATAROOTDIR "." CACHE STRING "Root directory for data files")
 	SET(DATADIR "data" CACHE STRING "Where to install data files")
 	SET(DESKTOPDIR "." CACHE STRING "Where to install .desktop file")
+	SET(DOCSDIR "." CACHE STRING "Where to install documentation")
 ENDIF(SYSTEMWIDE)
 
 # flags
@@ -79,6 +81,8 @@ IF(SYSTEMWIDE OR STANDALONE)
 	INSTALL(TARGETS hoverboard RUNTIME DESTINATION ${BINDIR})
 	INSTALL(DIRECTORY data/ DESTINATION ${DATADIR})
 
+	INSTALL(FILES README.md COPYING COPYING.DATA DESTINATION ${DOCSDIR})
+
 	IF(NOT WIN32)
 		CONFIGURE_FILE(misc/hoverboard.desktop.in misc/hoverboard.desktop)
 		INSTALL(FILES ${PROJECT_BINARY_DIR}/misc/hoverboard.desktop DESTINATION ${DESKTOPDIR})

COPYING.DATA

@@ -1,7 +1,10 @@
-datasrc/* and data/map_icons.png are (C) Dmitry Marakasov and are
-licensed under Creative Commons Attribution 4.0 license.
+map_icons.svg and map_icons.png were created by Dmitry Marakasov
+<amdmi3@amdmi3.ru> and are licensed under Creative Commons Attribution
+4.0 license.
 
-All other files in data/ directory were either obtained from
-https://xkcd.com/1608/ or derived from data obtained from there,
-are (C) Randall Munroe and are licensed under a Creative Commons
-Attribution-NonCommercial 2.5 License.
+All other data files were either obtained from https://xkcd.com/1608/
+or derived from such files, were created by Randall Munroe
+<xkcd@xkcd.com> and are licensed under a Creative Commons
+Attribution-NonCommercial 2.5 License:
+
+  http://xkcd.com/license.html