Added usefulness to README
Make things do gooder more betterer.

bot.c:
wrap the imgur check in #ifdef HAVE_LIBPCRE, to stop undefined references

bot_cmd_http.c:
in cmd_http()
-Werror yelled at line not being used, FIX'd.
added #ifdef on the actual output line because I'm testing without google api
Curl was forcing https requests as http.

I'm calling jon out on what that code used to do with the token + strlen.