mention new TELEMETA_GMAP_KEY setting in INSTALL

diff --git a/INSTALL b/INSTALL
index a294c57125fb0ce82b3ab8705b98e3c5cd7618ad..6fa637514c2747c1114a176fd0b5961558e9df7b 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -129,6 +129,7 @@ Add the following variables:
     :TELEMETA_SUBJECTS:     tuple of subject keywords (used for Dublin Core), such
                             as "Ethnology", etc...
     :TELEMETA_CACHE_DIR:    absolute path to the cache directory that you just created
+    :TELEMETA_GMAP_KEY:     your Google Map API key
 
 Just paste the two lines below::