* Update switch.pilight.markdown to add variables and update links
The variables unitcode and programcode are missing from the variables-list, unitcode is mentioned in the text below but they should be listed as optional variables if they are in fact optional variables.
furthermore the wiki-links to pilight are outdated, so i replaced the wiki.pilight.org links with manual.pilight,org links to their respective updated pages.
* Update switch.pilight.markdown
delete programcode
* ✏️ Small improvements
For some PiLight protocols there are different parameters used and therefore the variables have to be replaced in order to have the pilight_switch component working with HASS.
