Add sensors to vala binding and fix some names

Author: WasabiFan

vala/build.sh

@@ -1,7 +1,7 @@
 #This is a quick build script to build the library.
 
 #cp ev3dev-lib.cs ev3dev-lib.vala # Use a .cs extension to get partial syntax highlighting in editors that don't support vala
-valac --library=ev3dev-lib -H bin/ev3dev-lib.h ev3dev-lib.vala -X -fPIC -X -shared --vapi=bin/ev3dev-lib.vapi --pkg gio-2.0 -o bin/ev3dev-lib.so
+valac --library=ev3dev-lib -H bin/ev3dev-lib.h ev3dev-lib.vala -X -fPIC -X -shared --vapi=bin/ev3dev-lib.vapi --pkg gio-2.0 --pkg glib-2.0 -X -lm -o bin/ev3dev-lib.so
 cp ev3dev-lib.vala bin/ev3dev-lib.vala
 
 #valac "bin/ev3dev-lib.vapi" ev3dev.vala -X bin/ev3dev-lib.so -X -Ibin/. -o bin/ev3dev