Use rex-arch gem

MS-1703

Author: dmohanty-r7

Gemfile.lock

@@ -31,6 +31,7 @@ PATH
       rb-readline-r7
       recog
       redcarpet
+      rex-arch
       rex-java
       rex-powershell
       rex-random_identifier
@@ -220,8 +221,10 @@ GEM
     recog (2.0.21)
       nokogiri
     redcarpet (3.3.4)
+    rex-arch (0.1.0)
+      rex-text
     rex-java (0.1.2)
-    rex-powershell (0.1.0)
+    rex-powershell (0.1.1)
       rex-random_identifier
       rex-text
     rex-random_identifier (0.1.0)