Improve readme.

Author: awulkiew

README.md

@@ -42,6 +42,8 @@ To install after building double-click the *.vsix file from bin/Debug or bin/Rel
 
 ##### Debugger visualizers
 
+![Watch](images/natvis_watch.png)
+
 Supported:
 
 * Boost.Array: `array`
@@ -56,8 +58,6 @@ Supported:
 * Boost.Tuple: `tuple`
 * Boost.Variant: `variant`
 
-![Watch](images/natvis_watch.png)
-
 ##### Geometry Watch
 
 Watch window displaying graphical representation of variables in a single image. This allows to compare the variables easily. Variables can be of any supported type (see below) representing a geometrical object, e.g. point, polygon, ray, container of complex numbers, etc.