Fix the generator class path by moving it to it's standard path.

Because:
Rails wasn't picking up the generator when used in an engine
as it wasn't namespaced as expected.

This commit:
Fix it by moving it under `lib/generators/foundation/` directory

lib/foundation/rails.rb

@@ -1,3 +1,2 @@
 require 'foundation/rails/engine'
 require 'foundation/rails/version'
-require 'foundation/rails/generators/install_generator'

lib/generators/foundation/install_generator.rb

@@ -0,0 +1,69 @@
+require 'rails/generators'
+
+module Foundation
+  module Generators
+    class InstallGenerator < ::Rails::Generators::Base
+      source_root File.join(File.dirname(__FILE__), 'templates')
+      argument :layout_name, :type => :string, :default => 'application', :banner => 'layout_name'
+
+      class_option :haml, :desc => 'Generate HAML layout instead of erb', :type => :boolean
+      class_option :slim, :desc => 'Generate Slim layout instead of erb', :type => :boolean
+
+      def add_assets
+        # rails_ujs breaks, need to incorporate rails-behavior plugin for this to work seamlessly
+        # gsub_file "app/assets/javascripts/application#{detect_js_format[0]}", /\/\/= require jquery\n/, ""
+        insert_into_file File.join(javascripts_base_dir, "application#{detect_js_format[0]}"), "#{detect_js_format[1]} require foundation\n", :after => "jquery_ujs\n"
+        append_to_file File.join(javascripts_base_dir, "application#{detect_js_format[0]}"), "#{detect_js_format[2]}"
+        settings_file = File.join(File.dirname(__FILE__),"..", "..", "..", "vendor", "assets", "stylesheets", "foundation", "_settings.scss")
+        create_file File.join(stylesheets_base_dir, 'foundation_and_overrides.scss'), File.read(settings_file)
+        append_to_file File.join(stylesheets_base_dir, 'foundation_and_overrides.scss'), "\n@import 'foundation';\n"
+        insert_into_file File.join(stylesheets_base_dir, "application#{detect_css_format[0]}"), "\n#{detect_css_format[1]} require foundation_and_overrides\n", :after => "require_self"
+      end
+
+      def detect_js_format
+        return ['.coffee', '#=', "\n() ->\n  $(document).foundation()\n"] if File.exist?(File.join(javascripts_base_dir, 'application.coffee'))
+        return ['.coffee.erb', '#=', "\n() ->\n  $(document).foundation()\n"] if File.exist?(File.join(javascripts_base_dir, 'application.coffee.erb'))
+        return ['.js.coffee', '#=', "\n() ->\n  $(document).foundation()\n"] if File.exist?(File.join(javascripts_base_dir, 'application.js.coffee'))
+        return ['.js.coffee.erb', '#=', "\n() ->\n  $(document).foundation()\n"] if File.exist?(File.join(javascripts_base_dir, 'application.js.coffee.erb'))
+        return ['.js', '//=', "\n$(function(){ $(document).foundation(); });\n"] if File.exist?(File.join(javascripts_base_dir, 'application.js'))
+        return ['.js.erb', '//=', "\n$(function(){ $(document).foundation(); });\n"] if File.exist?(File.join(javascripts_base_dir, 'application.js.erb'))
+      end
+
+      def detect_css_format
+        return ['.css', ' *='] if File.exist?(File.join(stylesheets_base_dir, 'application.css'))
+        return ['.css.sass', ' //='] if File.exist?(File.join(stylesheets_base_dir, 'application.css.sass'))
+        return ['.sass', ' //='] if File.exist?(File.join(stylesheets_base_dir, 'application.sass'))
+        return ['.css.scss', ' //='] if File.exist?(File.join(stylesheets_base_dir, 'application.css.scss'))
+        return ['.scss', ' //='] if File.exist?(File.join(stylesheets_base_dir, 'application.scss'))
+      end
+
+      def create_layout
+        if options.haml?||(defined?(Haml) && options.haml?)
+          template 'application.html.haml', File.join(layouts_base_dir, "#{file_name}.html.haml")
+        elsif options.slim?||(defined?(Slim) && options.slim?)
+          template 'application.html.slim', File.join(layouts_base_dir, "#{file_name}.html.slim")
+        else
+          template 'application.html.erb', File.join(layouts_base_dir, "#{file_name}.html.erb")
+        end
+      end
+
+      private
+
+      def file_name
+        layout_name.underscore.downcase
+      end
+
+      def javascripts_base_dir
+        File.join('app', 'assets', 'javascripts')
+      end
+
+      def stylesheets_base_dir
+        File.join('app', 'assets', 'stylesheets')
+      end
+
+      def layouts_base_dir
+        File.join('app', 'views', 'layouts')
+      end
+    end
+  end
+end