[tracker/sam/readme-updates: 12/15] README: Prominently mention the two different tracker repos

[Sam Thursfield <sthursfield src gnome org>]

commit ea4263b50d8382154068f45656229c449acf2440
Author: Sam Thursfield <sam afuera me uk>
Date:   Mon May 20 22:35:20 2019 +0200

    README: Prominently mention the two different tracker repos
    
    Let's do our best to avoid confusion.
    
    Also link to gnome-online-miners.

 README.md | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
---
diff --git a/README.md b/README.md
index 4d91b9623..facdea499 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,16 @@ Tracker is an efficient search engine and
 [triplestore](https://en.wikipedia.org/wiki/Triplestore) for desktop, embedded
 and mobile.
 
+The Tracker project is divided into two main repositories:
+
+  * [Tracker core](https://gitlab.gnome.org/GNOME/tracker) contains the database
+    (*tracker-store*), the database ontologies, the commandline user
+    interface (`tracker`), and several support libraries.
+
+  * [Tracker Miners](https://gitlab.gnome.org/GNOME/tracker-miners) contains
+    the indexer daemon (*tracker-miner-fs*) and tools to extract metadata
+    from many different filetypes.
+
 More information on Tracker can be found at:
 
   * <https://wiki.gnome.org/Projects/Tracker>
@@ -20,6 +30,12 @@ IRC channel #tracker on:
 
   * [irc.gimp.net](irc://irc.gimp.net)
 
+Related projects:
+
+  * [GNOME Online Miners](https://gitlab.gnome.org/GNOME/gnome-online-miners/)
+    extends Tracker to allow searching and indexing some kinds of online
+    content.
+
 ## Compilation
 
 To setup the project for compilation after checking it out from