live-server: add page (#1782)

pages/common/live-server.md

@@ -0,0 +1,19 @@
+# live-server
+
+> A simple development http server with live reload capability.
+
+- Serve an index.html file and reload on changes:
+
+`live-server`
+
+- Specify a port (default is 8080) from which to serve a file:
+
+`live-server --port={{8081}}`
+
+- Specify a given file to serve:
+
+`live-server --open={{about.html}}`
+
+- Proxy all requests for ROUTE to URL:
+
+`live-server --proxy={{/}}:{{http:localhost:3000}}`