Unclear dependency on luarefvim #45
Description
I didn't understand what was going wrong when I tried to use K on lua functions.
I had to dig into the code to figure out that I needed luarefvim (or even better, the monkoose/luarefvim fork since it puts the syntax file in the right place).
Would be nice if using K gave an error ("Lua help requires the luarefvim vim plugin") if it failed to lookup the term instead of showing help.txt.