[gxml] Meson: enable docs and introspection by default

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit d03963352a50e49915b7221f9de3b6e9ba6b4d18
Author: Daniel Espinosa <esodan gmail com>
Date:   Mon Jul 8 14:21:14 2019 -0500

    Meson: enable docs and introspection by default

 meson_options.txt | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/meson_options.txt b/meson_options.txt
index 7e9f059..6b696bf 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,3 +1,2 @@
-option('tnode-tests', type : 'boolean', value : false, description : 'Add TNode classes unit tests')
-option('introspection', type : 'boolean', value : false, description : 'Create GObject Introspection file 
definitions')
-option('docs', type : 'boolean', value : false, description : 'Generate Vala Documentation')
+option('introspection', type : 'boolean', value : true, description : 'Create GObject Introspection file 
definitions')
+option('docs', type : 'boolean', value : true, description : 'Generate Vala Documentation')