Back to dev version
Updated docs and doc strings, removed parts of docs that don't seem to
apply to the current code base.
Merge pull request #51 from jwhitlark/update_docs

Updated docs and doc strings, removed outdated docs.
Added http/https scheme metric.
Updated changelog.
Merge pull request #52 from jwhitlark/add_ring_scheme_metric

Added scheme metric to ring instrumentation
Master is 2.4.0-SNAPSHOT
Backport pull request #52 to stable

Conflicts:
	metrics-clojure-core/project.clj
	metrics-clojure-ganglia/project.clj
	metrics-clojure-graphite/project.clj
	metrics-clojure-health/project.clj
	metrics-clojure-jvm/project.clj
	metrics-clojure-ring/project.clj