added version as constant + to commandline

Rakefile

@@ -16,8 +16,11 @@ end
 
 begin
   require 'jeweler'
+  require File.dirname(__FILE__) + "/lib/boson/version"
+
   Jeweler::Tasks.new do |s|
     s.name = "boson"
+    s.version = Boson::VERSION
     s.description = "A command/task framework similar to rake and thor that opens your ruby universe to the commandline and irb."
     s.summary =  "Boson provides users with the power to turn any ruby method into a full-fledged commandline tool. Boson achieves this with powerful options (borrowed from thor) and views (thanks to hirb). Some other unique features that differentiate it from rake and thor include being accessible from irb and the commandline, being able to write boson commands in non-dsl ruby and toggling a pretty view of a command's output without additional view code."
     s.email = "gabriel.horner@gmail.com"

lib/boson.rb

@@ -5,7 +5,7 @@
 # order of library subclasses matters
 %w{module file gem require local_file}.each {|e| require "boson/libraries/#{e}_library" }
 (%w{namespace view command util commands option_parser options} +
-  %w{index repo_index scientist option_command pipe pipes}).each {|e| require "boson/#{e}" }
+  %w{index repo_index scientist option_command pipe pipes version}).each {|e| require "boson/#{e}" }
 
 # This module stores the libraries, commands, repos and main object used throughout Boson.
 #

lib/boson/runners/bin_runner.rb

@@ -34,6 +34,7 @@ module Boson
   class BinRunner < Runner
     GLOBAL_OPTIONS =  {
       :verbose=>{:type=>:boolean, :desc=>"Verbose description of loading libraries, errors or help"},
+      :version=>{:type=>:boolean, :desc=>"Prints the current version"},
       :index=>{:type=>:array, :desc=>"Libraries to index. Libraries must be passed with '='.",
         :bool_default=>nil, :values=>all_libraries, :regexp=>true, :enum=>false},
       :execute=>{:type=>:string, :desc=>"Executes given arguments as a one line script"},
@@ -53,6 +54,7 @@ class <<self
       # Starts, processes and ends a commandline request.
       def start(args=ARGV)
         @command, @options, @args = parse_args(args)
+        return puts(Boson::VERSION) if @options[:version]
         return print_usage if args.empty? || (@command.nil? && !@options[:console] && !@options[:execute])
         return ConsoleRunner.bin_start(@options[:console], @options[:load]) if @options[:console]
         init

lib/boson/version.rb

@@ -0,0 +1,3 @@
+module Boson
+  VERSION = '0.2.3'
+end