Update README

README

-CurvedLines is a plugin for flot, which displays lines in a smooth curved way. This is achieved by adding additional points in between the "real" data points.
+CurvedLines is a plugin for flot, which displays lines in a smooth curved way. This is achieved by adding additional points in between the "real" data points. See the test files for examples.
 
-The plugin is based on nergal.dev's work and gives you an option to display curved lines. I further extended the code with a 2nd mode, which forces the lines to have their minima/maxima on the original data points. 
+The plugin is based on nergal.dev's work and gives you an option to display curved lines. I further extended the code with a 2nd mode, which forces the lines to have their minima/maxima on the original data points.
 
 Feel free to add additional features and correct errors.
 
-Regards Michael
\ No newline at end of file
+Regards Michael
+
+
+Update:
+added tests/Issue18.htm with a better explanation of the curvePointFactor and fitPointDist parameter!
+
+
+    how to use it:
+    ____________________________________________________
+
+    var d1 = [[5,5],[7,3],[9,12]];
+
+    var options = { series: { curvedLines: {  active: true }}};
+
+    //you might want to adjust curvePointFactor 
+    $.plot($("#placeholder"), [{data = d1, lines: { show: true}, curvedLines: {apply: true}}], options);
+
+     _____________________________________________________
+
+     options:
+     _____________________________________________________
+
+     active:           bool true => plugin can be used
+     apply:            bool true => series will be drawn as curved line
+     fit:              bool true => forces the max,mins of the curve to be on the datapoints
+     curvePointFactor  int  defines how many "virtual" points are used per "real" data point to
+				emulate the curvedLines (points total = real points * curvePointFactor)
+     fitPointDist:     int  defines the x axis distance of the additional two points that are used
+   				to enforce the min max condition.
+     _____________________________________________________