Merge pull request #784 from rockstorm101/slic3r-integration-notes

README: Add Slic3r integration notes

README.md

@@ -167,9 +167,13 @@ Load an STL (see the note on skeinforge below) or GCODE file, and you can upload
 The "monitor printer" function, when enabled, checks the printer state (temperatures, SD print progress) every 3 seconds.
 The command box recognizes all pronsole commands, but has no tabcompletion.
 
-If you want to load stl files, you need to install a slicing program such as Slic3r and add its path to the settings.
-See the Slic3r readme for more details on integration.
+If you want to load stl files, you need to install a slicing program such as Slic3r or Skeinforge and add its path to the settings.
 
+#### Slic3r integration
+
+To invoke Slic3r directly from Pronterface your slicing command (_Settings_ > _Options_ > _External Commands_ > _Slice Command_) should look something like `slic3r $s -o $o`. If Slic3r is properly installed "slic3r" will suffice, otherwise, replace it with the full path to Slic3r's executable.
+
+If the Slic3r integration option (_Settings_ > _Options_ > _User interface_ > _Enable Slic3r integration_) is checked a new menu will appear after application restart which will allow you to choose among your previously saved Slic3r Print/Filament/Printer settings.
 
 ## USING PRONSOLE