Create basic-usage.md

Author: Sam Alarie

udroid-landing/basic-usage.md

@@ -0,0 +1,18 @@
+### Basic Usage
+  | **Command**        | **Usage** |
+  |--------------------|-----------|
+  | `udroid`            | To login to shell |
+  |  `udroid upgrade` | to upgrade fs or to get new features if available |
+  | `startvnc`   | start vncserver at port `1` (you can change default port by exporting env varaible `DEFAULT_VNC_PORT` to a port number) |
+  | `udroid stopvnc`    | stop vncserver at given or default port `1`
+  | `udroid --enable-dbus` | To start udroid with dbus hack enabled |
+  | `udroid --enable-dbus-vnc` | To start vnc session with dbus hack enabled |
+
+## Environment Variables
+- `DEFAULT_VNC_PORT` to set vnc port for scripts
+- `HIPPO_BRANCH` to set custom branch for cloning code
+
+#### Alt way to login
+```bash
+proot-distro login udroid --bind /dev/null:/proc/sys/kernel/cap_last_cap
+```