remove 1.9.3 from docs

docs/INSTALL.md

@@ -22,7 +22,7 @@ Hosting Rails applications is complicated. Even if you already have Postgres, Re
 
 - [Postgres 9.1+](http://www.postgresql.org/download/)
 - [Redis 2.6+](http://redis.io/download)
-- [Ruby 1.9.3+](http://www.ruby-lang.org/en/downloads/) (we recommend 2.0.0-p353 or higher)
+- [Ruby 2.0+](http://www.ruby-lang.org/en/downloads/) (we recommend 2.0.0-p353 or higher)
 
 
 

docs/TROUBLESHOOTING-prod.md

@@ -3,9 +3,9 @@
 Are you having trouble setting up Discourse? Here are some basic things to
 check before reaching out to the community for help:
 
-1. Are you running Ruby 1.9.3 or later?
+1. Are you running Ruby 2.0 or later?
 
-   Discourse is designed for Ruby 1.9.3 or later. You can check your version by
+   Discourse is designed for Ruby 2.0 or later. You can check your version by
 typing `ruby -v` (as the discourse user) and checking the response for
 something like:
 

docs/TROUBLESHOOTING.md

@@ -4,9 +4,9 @@ Are you having trouble setting up Discourse? Here are some basic things to check
 reaching out to the community for help:
 
 
-1. Are you running Ruby 1.9.3 or later?
+1. Are you running Ruby 2.0 or later?
 
-   Discourse is designed for Ruby 1.9.3 or later. We recommend 2.0.0 p353 or later. You can check your version by typing 
+   Discourse is designed for Ruby 2.0 or later. We recommend 2.0.0 p353 or later. You can check your version by typing 
    `ruby -v` and checking the response.