allow for multiple node paths

fixes #7

lib/capistrano/tasks/nvm.cap

@@ -7,8 +7,11 @@ namespace :nvm do
         exit 1
       end
 
-      unless test "[ -d #{fetch(:nvm_node_path)} ]"
-        error "nvm: #{nvm_node} is not installed or not found in #{fetch(:nvm_node_path)}"
+      nvm_node_path = fetch(:nvm_node_path)
+      nvm_node_path = [nvm_node_path] unless nvm_node_path.is_a?(Array)
+
+      unless test(nvm_node_path.map {|p| "[ -d #{p} ]" }.join(" || "))
+        error "nvm: #{nvm_node} is not installed or not found in any of #{nvm_node_path.join(" ")}"
         exit 1
       end
     end
@@ -49,7 +52,7 @@ namespace :load do
     }
 
     set :nvm_roles, fetch(:nvm_roles, :all)
-    set :nvm_node_path, -> { "#{fetch(:nvm_path)}/#{fetch(:nvm_node)}" }
+    set :nvm_node_path, -> { ["#{fetch(:nvm_path)}/#{fetch(:nvm_node)}", "#{fetch(:nvm_path)}/versions/node/#{fetch(:nvm_node)}"] }
     set :nvm_map_bins, %w{node npm}
   end
 end