Ask Tempfile to unlink when we Tempfile#close.

Fixes: #375
Signed-off-by: Jordon Bedwell <jordon@envygeeks.com>

lib/pry/helpers/command_helpers.rb

@@ -25,7 +25,7 @@ class Pry
         file = Tempfile.new(['pry', '.rb'])
         yield file
       ensure
-        file.close
+        file.close(true)
       end
 
       def get_method_or_raise(name, target, opts={}, omit_help=false)

test/helper.rb

@@ -167,7 +167,7 @@ def temp_file
   file = Tempfile.new('pry')
   yield file
 ensure
-  file.close
+  file.close(true)
 end
 
 

test/test_default_commands/test_introspection.rb

@@ -53,7 +53,7 @@ describe "Pry::DefaultCommands::Introspection" do
 
           mock_pry("edit #{path}", "$rand").should =~ /#{@rand}/
 
-          tf.close
+          tf.close(true)
         end
 
         it "should not reload the file if it is not a ruby file" do
@@ -62,7 +62,7 @@ describe "Pry::DefaultCommands::Introspection" do
 
           mock_pry("edit #{path}", "$rand").should.not =~ /#{@rand}/
 
-          tf.close
+          tf.close(true)
         end
 
         it "should not reload a ruby file if -n is given" do
@@ -71,7 +71,7 @@ describe "Pry::DefaultCommands::Introspection" do
 
           mock_pry("edit -n #{path}", "$rand").should.not =~ /#{@rand}/
 
-          tf.close
+          tf.close(true)
         end
 
         it "should reload a non-ruby file if -r is given" do
@@ -80,7 +80,7 @@ describe "Pry::DefaultCommands::Introspection" do
 
           mock_pry("edit -r #{path}", "$rand").should =~ /#{@rand}/
 
-          tf.close
+          tf.close(true)
         end
       end
     end

test/test_default_commands/test_shell.rb

@@ -140,7 +140,9 @@ describe "Pry::DefaultCommands::Shell" do
         pry_instance.rep(self)
         str_output.string.should =~ /bt number 0/
 
-        temp_files.each(&:close)
+        temp_files.each do |file|
+          file.close(true)
+        end
       end
 
     end