Added instructions to connect local server via adb.
Added instructions to connect local server via adb.

abhaymaniyar/zulip-android,prati0100/zulip-android,zulip/zulip-android,abhaymaniyar/zulip-android,prati0100/zulip-android,vishwesh3/zulip-android,Sam1301/zulip-android,Sam1301/zulip-android