changed some commands to include hyphens: install-command, pry-version, import-set

lib/pry/command_set.rb

@@ -243,7 +243,7 @@ class Pry
         end
       end
 
-      command "install", "Install a disabled command." do |name|
+      command "install-command", "Install a disabled command." do |name|
         command = find_command(name)
         stub_info = command.options[:stub_info]
 

lib/pry/default_commands/basic.rb

@@ -16,17 +16,34 @@ class Pry
         end
       end
 
-      command "version", "Show Pry version." do
+      command "pry-version", "Show Pry version." do
         output.puts "Pry version: #{Pry::VERSION} on Ruby #{RUBY_VERSION}."
       end
 
-      command "import", "Import a command set" do |command_set_name|
+      command "import-set", "Import a command set" do |command_set_name|
         next output.puts "Provide a command set name" if command_set.nil?
 
         set = target.eval(arg_string)
         Pry.active_instance.commands.import set
       end
 
+      command "reload-method", "Reload the source file that contains the specified method" do |meth_name|
+        if (meth = get_method_object(meth_name, target, {})).nil?
+          output.puts "Invalid method name: #{meth_name}."
+          next
+        end
+
+        if is_a_c_method?(meth)
+          output.puts "Error: Can't reload a C method."
+        elsif is_a_dynamically_defined_method?(meth)
+          output.puts "Error: Can't reload an eval method."
+        else
+          file_name = meth.source_location.first
+          load file_name
+          output.puts "Reloaded #{file_name}."
+        end
+      end
+
       command "reset", "Reset the REPL to a clean state." do
         output.puts "Pry reset."
         exec "pry"