Update .gitignore with comments (thanks Xylemon)

.gitignore

@@ -1,53 +1,100 @@
-*~
+# Nuclide
+
 Documentation/html/
 ThirdParty/
-darkstar/
-noffice/
-pvk/
-czero/
-czeror/
-ship/
-src/client/cstrike.new
-src/server/cstrike.new
-src/shared/cstrike.new
-src/client/hl2
-src/server/hl2
-src/shared/hl2
-src/client/wastes
-src/server/wastes
-src/shared/wastes
-*.lno
-maptimes.txt
-iplog.txt
-entities.def
-*.pk3
-*.dat
-*.way
-*.lvc
-*.fsv
-*.pak
-*.pk3
-*.pk4
-*.kdev4
-csqccore.txt
-*.log
-ssqccore.txt
-fullchain.pem
-privkey.pem
-menucore.txt
-conhistory.txt
+
+# Tools
+
+fteqcc
+fteqw
+imgtool
+vmap
+vvmtool
+
+# FTEQW / idTech engine files
+
 condump.txt
 config.cfg
+conhistory.txt
+csqccore.txt
+entities.def
 fte.cfg
-nuclide.cfg
-qkey
+fullchain.pem
 installed.lst
-*.kdev4
-hl2/*
-bshift/*
-baseq2/*
-gangstawars/*
-nightfire/*
+iplog.txt
+maptimes.txt
+menucore.txt
+nuclide.cfg
+privkey.pem
+qkey
+ssqccore.txt
+
+# Development and Data files
+
+*~
+*.dat
+*.fsv
 *.ico
-src/engine/
-bin/
+*.kdev4
+*.kdev4
+*.lno
+*.log
+*.lvc
+*.pak
+*.pk3
+*.pk3
+*.pk4
+*.way
+
+# Binary files
+*_x86*
+*_x64*
+*.dll
+
+# Known Games and Mods
+#
+# Ideally you would add
+# your project here as well
+
+AbsoluteZero/
+base_pbr/
+baseq2/
+baseq3/
+bshift/
+cod/
+cod4/
+css/
+cstrike/
+czero/
+czeror/
+darkstar/
+dmc/
+dods/
+fortress/
+gangstawars/
+gearbox/
+gmod9/
+hhdeath/
+hl2/
+hl2mp/
+hunger/
+id1/
+left4dead/
+nightfire/
+noffice/
+overturn/
+poke646/
+portal/
+pvk/
+ranon/
+rewolf/
+scihunt/
+ship/
+tf/
+tf2/
+tfc/
+ts/
+valve/
+wastes/
+zp/
+