Update YARD config, add IRB config (#36)

Author: jgarber623

.irbrc

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+require "irb/completion"
+
+IRB.conf[:AUTO_INDENT] = true
+IRB.conf[:HISTORY_FILE] = ".irb_history"
+IRB.conf[:SAVE_HISTORY] = 1000
+IRB.conf[:USE_AUTOCOMPLETE] = false
+
+def clear
+  system("clear")
+end

.yardopts

@@ -1,6 +1,7 @@
 --no-private
 -
 CHANGELOG.md
+CODE_OF_CONDUCT.md
 CONTRIBUTING.md
 LICENSE
 USAGE.md