Update information about drop cutter sampling

Using-BlenderCAM-with-OpenCAMLib.md

@@ -24,4 +24,4 @@ Install (by default in /usr/local):
     sudo make install
 
 To use OpenCAMLib waterlines, select "Show experimental features" in Blender User Preferences / Addons / CAM - gcode generation tools. Then select Waterline strategy and "Use OpenCAMLib". Current version lacks dialog for waterline resolution and automatic determination of cutter length, those can be adjusted in "scripts/addons/cam/opencamlib/oclWaterline.py" file.
-Parallel strategy and drop cutter sampling doesn't work with current version(but was tested with very good results with earlier ones) and will be fixed this week.
+For "parallel" strategy and other drop cutter sampling operations select both "Use exact mode" and "Use OpenCAMLib".