[epiphany] README: Add dependency install guide for DEBs

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 1fddf114f2a969e01a23330b9c40d458d7bbd2e0
Author: Michal Krasowski <krasowski michal gmail com>
Date:   Thu Nov 7 14:47:31 2019 +0100

    README: Add dependency install guide for DEBs
    
    There was an instruction for RPM-based distributions already,
    I have prepared a one-liner for DEB-based distros.
    
    Thanks to Peter Hutterer for providing instructions on this.
    
    http://who-t.blogspot.com/2018/07/meson-fails-with-native-dependency-not-found.html

 README.md | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/README.md b/README.md
index 90c788e3a..8c110c2b1 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,12 @@ automatically. For example, in Fedora:
 $ sudo dnf install 'pkgconfig(hogweed)'
 ```
 
+In deb-based distributions:
+
+```
+$ sudo apt install $(apt-file search --package-only hogweed)
+```
+
 In other distributions, you must research each dependency to determine which
 package provides the required pkg-config file.