Limit list to 20 wifi APs, not 5.

lib/wifi/index.js

@@ -33,13 +33,14 @@ class Wifi {
 				console.error(err)
 				return callback(err)
 			}
+			const limit = 20;
 			const lines = stdout.split('\n')
 			let output = []
 			let line
 			let i = 0
 			for (let l of lines) {
 				line = l.replace('ESSID:',  '').trim()
-				if (line !== '""' && i < 5) {
+				if (line !== '""' && i < limit) {
 					line = line.replace(quoteRe, '')
 					output.push(line)
 				}