Added ws_connbuf type
Bootstraped connbuf.c file
Added ws_connbuf_init()
Added ws_connbuf_deinit()
Added ws_connbuf_reserve()
Added ws_connbuf_append()
Added ws_connbuf_discard()
Added connbuf.c to CMakeLists.txt
Merge pull request #143 from manuelmessner/add-ws_connbuff

Added ws_connbuf type