Update example in readme

Author: milliams

README.rst

@@ -16,16 +16,18 @@ For example, code like:
     extern crate plotlib;
     use plotlib::scatter::Scatter;
     use plotlib::scatter;
+    use plotlib::style::{Marker, Point};
     use plotlib::view::View;
-    use plotlib::plot::Plot;
+    use plotlib::page::Page;
 
     fn main() {
         // Scatter plots expect a list of pairs
         let data1 = [(-3.0, 2.3), (-1.6, 5.3), (0.3, 0.7), (4.3, -1.4), (6.4, 4.3), (8.5, 3.7)];
+
         // We create our scatter plot from the data
         let s1 = Scatter::from_vec(&data1)
             .style(scatter::Style::new()
-                .marker(scatter::Marker::Square) // setting the marker to be a square
+                .marker(Marker::Square) // setting the marker to be a square
                 .colour("#DD3355")); // and a custom colour
 
         // We can plot multiple data sets in the same view
@@ -34,15 +36,15 @@ For example, code like:
             .style(scatter::Style::new() // uses the default marker
                 .colour("#35C788")); // and a different colour
 
-        // The 'view' describeswhat set of data is drawn
+        // The 'view' describes what set of data is drawn
         let v = View::new()
             .add(&s1)
             .add(&s2)
             .x_range(-5., 10.)
             .y_range(-2., 6.);
 
-        // A plot with a single view is then saved to an SVG file
-        Plot::single(&v).save("scatter.svg");
+        // A page with a single view is then saved to an SVG file
+        Page::single(&v).save("scatter.svg");
     }
 
 will produce output like: