update build instruction in README

* COMMENT -*- mode: org -*-

#+Date: 2019-09-02

Time-stamp: <2019-09-02>

Time-stamp: <2020-01-14>

* zero-panel

zero-panel is a dbus service to provides a gtk3 based panel for showing

You can check zero-el document at https://blog.emacsos.com/zero-el.html

* binary release

zero-panel have binary release for debian and ubuntu.  See the above zero-el

document for how to add the apt repo.

* To build zero-panel from source

Get [[https://mesonbuild.com][meson build tool]].

- Get [[https://mesonbuild.com][meson build tool]].

  #+BEGIN_SRC sh

apt install libgtk-3-dev libglib2.0-dev meson

# in zero-panel source dir

    sudo apt install -y meson ninja

    # or

    python3 -m pip install --user meson ninja

  #+END_SRC

- Install zero-panel dependencies

  #+BEGIN_SRC sh

    sudo apt install -y libgtk-3-dev libglib2.0-dev

  #+END_SRC

- Get zero-panel source code and build it

  #+BEGIN_SRC sh

    git clone https://gitlab.emacsos.com/sylecn/zero-panel.git

    cd zero-panel

    meson setup --buildtype release release/

    ninja -C release/

  #+END_SRC