Update README

README.md

@@ -85,19 +85,15 @@ If Charming is properly installed, you should get a _lucky clove_ as below 🎉:
 
 ## API Reference
 
-### [Creating Application](#creating-application-1)
-
-Rendering app into DOM and animate it.
+Rendering app into DOM and animate it:
 
 - [cm.**app**](#cm-app)
 - [app.**render**](#app-render)
 - [app.**frame**](#app-frame)
 - [app.**start**](#app-start)
 - [app.**stop**](#app-stop)
 
-### [Setting Attributes](#setting-attributes-1)
-
-Controlling the aesthetic appearance of the shapes.
+Controlling the aesthetic appearance of the shapes:
 
 - [app.**scene**](#app-scene) - Sets the specified css _color_ used for the background of the rendering context of the app and returns this app.
 - [app.**background**](#app-background) - Sets the specified color (_ch_, _fg_, _bg_) used for the background of the app in cells and returns this app.
@@ -107,34 +103,26 @@ Controlling the aesthetic appearance of the shapes.
 - [app.**noFill**](#app-nofill) - Disables drawing the fill of shapes and returns this app.
 - [cm.**wide**](#cm-wide) - Marks the _ch_ as a wide character and returns the marked code point of it.
 
-### [Drawing Shapes](#drawing-shapes-1)
-
-Adding primitives, vertices, and curves to app.
+Adding primitives, vertices, and curves to app:
 
 - [app.**point**](#app-point) - Draws a single cell at the specified coordinates (x, y) and returns this app.
 - [app.**line**](#app-line) - Draws a straight path from the specified coordinates (_x_, _y_) to coordinates (_x1_, _y1_) and returns this app.
 - [app.**rect**](#app-rect) - Draws a rectangle at the specified coordinates (_x_, _y_) with specified _width_ and _height_ and returns this app.
 - [app.**pixels**](#app-pixels) - Draws pixels specified by the _render_ function at the specified coordinates (_x_, _y_) and returns this app.
 
-### [Applying Transformations](#applying-transformations-1)
-
-Transforming shapes.
+Transforming shapes:
 
 - [app.**translate**](#app-translate)
 - [app.**scale**](#app-scale)
 - [app.**rotate**](#app-rotate)
 - [app.**popMatrix**](#app-popMatrix)
 - [app.**pushMatrix**](#app-pushMatrix)
 
-### [Control Flow](#control-flow-1)
-
-A more declarative programming style.
+A more declarative programming style:
 
 - [app.**call**](#app-call) - Calls the specified function on this app with any optional arguments and returns this app.
 
-### [Instance Properties](#instance-properties-1)
-
-State of the app.
+State of the app:
 
 - [app.**node**](#app-node) - Returns the canvas used to render the app.
 - [app.**cols**](#app-cols) - Returns the number of columns in the terminal.