Check if user input was an empty string. Update top level documentation

README.md

@@ -4,12 +4,12 @@ Toy robot simulator written in Ruby
 ***
 
 ## Installation
-Environment: Built on Mac OSx using Ruby -v 2.4.1
+Environment: Built on Mac OSX 10.11.6 using Ruby -v 2.4.1
 
 Make sure you have the correct version of ruby installed 
 https://www.ruby-lang.org/en/documentation/installation/
 
-Clone this Repo 
+Clone this Repo
 > $ git clone https://github.com/selenasmall/toy_robot.git 
 
 In root of the app run bundle install

lib/action.rb

@@ -53,9 +53,10 @@ def report(position)
 
   OPTIONS = %w[WEST NORTH EAST SOUTH].freeze
 
-  # Prev Option method
+  # Prev option method
   # Find previous value in the options array
   # @param direction [String]
+  # @param options [Array]
   # @return previous direction
   def prev_option(direction)
     return unless OPTIONS.include?(direction)
@@ -68,9 +69,10 @@ def prev_option(direction)
     OPTIONS.fetch(i)
   end
 
-  # Next Option method
+  # Next option method
   # Find next value in the options array
   # @param direction [String]
+  # @param options [Array]
   # @return next direction
   def next_option(direction)
     return unless OPTIONS.include?(direction)

toy_robot.rb

@@ -13,6 +13,8 @@
 loop do
   input = gets.chomp
 
+  next if input.empty?
+
   unless 'EXIT'.match?(input)
     command.interpret(input)
     next