Fixed include

This is the first "release".
Use with care as not all features are implemented, though one can use
the code for a little bot

README.md

@@ -7,6 +7,7 @@ To compile, you just need a C++-Compiler and CMake and some libraries:
 * libstdc++-dev
 * libcurlpp-dev
 * libjsoncpp-dev
+* libcurl4-openssl-dev (or similar)
 
 and - of course - their dependencies.
 

include/Telegram/TelegramBot.h

@@ -4,7 +4,7 @@
 #include <string>
 #include <map>
 
-#include <curl/curl.h>
+#include <curlpp/cURLpp.hpp>
 #include <json/json.h>
 
 #include <Telegram/Message.h>