Replace lhttpc by fusco

Conflicts:
	rebar.config
	src/escalus_bosh.erl
Support functions to deal with replies and connection information

Conflicts:
	src/escalus_bosh.erl
Fix fusco call
Use Fusco Client Pool

* Allows two HTTP connections for BOSH
Merge pull request #18 from dcorbacho/fusco

Fusco