[IMP] Update readme with color_field option

web_timeline/README.rst

@@ -66,6 +66,8 @@ the possible attributes for the tag:
 +--------------------+-----------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | colors             | No        | Allows to set certain specific colors if the expressed condition (JS syntax) is met.                                                                                                                                                                                      |
 +--------------------+-----------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| color-field        | No        | Allows to set a field (on the current model) that contains the HTML color (e.g. #FFFFFF). This option has priority over 'colors'.                                                                                                                                         |
++--------------------+-----------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | dependency_arrow   | No        | Set this attribute to a x2many field to draw arrows between the records referenced in the x2many field.                                                                                                                                                                   |
 +--------------------+-----------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+