Add benches, examples to fork_choice

eth2/fork_choice/Cargo.toml

@@ -4,6 +4,10 @@ version = "0.1.0"
 authors = ["Age Manning <Age@AgeManning.com>"]
 edition = "2018"
 
+[[bench]]
+name = "benches"
+harness = false
+
 [dependencies]
 store = { path = "../../beacon_node/store" }
 ssz = { path = "../utils/ssz" }
@@ -12,6 +16,7 @@ log = "0.4.6"
 bit-vec = "0.5.0"
 
 [dev-dependencies]
+criterion = "0.2"
 hex = "0.3.2"
 yaml-rust = "0.4.2"
 bls = { path = "../utils/bls" }