more configurations.

Cargo.lock

@@ -14,6 +14,7 @@ name = "altherego"
 version = "0.1.0"
 dependencies = [
  "env_logger",
+ "envconfig",
  "log",
  "reqwest",
  "serde",
@@ -184,6 +185,26 @@ dependencies = [
  "termcolor",
 ]
 
+[[package]]
+name = "envconfig"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c0ef0470da909709515ab175d5d12f1b20932f758f731589e1ff198561ab9ca"
+dependencies = [
+ "envconfig_derive",
+]
+
+[[package]]
+name = "envconfig_derive"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ca7511366e70d25663dbc2501911beae6064d51687214794efd2d8f5ad73440"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.7"