add simple docs

docs/annotations.md

@@ -8,6 +8,7 @@ and some other properties. Here is a list of the available annotation methods:
 
 * `note(x, y, width, height, contents, options)`
 * `link(x, y, width, height, url, options)`
+* `goTo(x, y, w, h, name, options)`
 * `highlight(x, y, width, height, options)`
 * `underline(x, y, width, height, options)`
 * `strike(x, y, width, height, options)`
@@ -61,6 +62,9 @@ Here is an example that uses a few of the annotation types.
        .strike(20, doc.y, doc.widthOfString('STRIKE!'), height)
        .text('STRIKE!');
 
+    // Adding go to as annotation
+    doc.goTo(x, y, w, h, 'LINK', options);
+
 The output of this example looks like this.
 
 ![0](images/annotations.png)

docs/getting_started.md

@@ -194,6 +194,30 @@ capitalized.
 - `CreationDate` - the date the document was created (added automatically by PDFKit)
 - `ModDate` - the date the document was last modified
 
+## Destination
+
+Anchor may specify a destination by `addNamedDestination(name, ...args)`, which consists of a page, the location of the display window on that page, and the zoom factor to use when displaying that page.
+
+Examples:
+
+    // Insert anchor for current page
+    doc.addNamedDestination('LINK');
+
+    // Insert anchor for current page with only horizontal magnified to fit where vertical top is 100
+    doc.addNamedDestination('LINK', 'FitH', 100);
+
+    // Insert anchor to display a portion of the current page, 1/2 inch in from the top and left and zoomed 50%
+    doc.addNamedDestination('LINK', 'XYZ', 36, 36, 50);
+
+    // Insert anchor for this text
+    doc.text('End of paragraph', { destination: 'ENDP' });
+
+    // Go to annotation
+    doc.text('Another goto', 20, 0, {
+   	  goTo: 'ENDP',
+   	  underline: true
+    });
+
 ## Encryption and Access Privileges
 
 PDF specification allow you to encrypt the PDF file and require a password when opening the file,

docs/images.md

@@ -14,6 +14,9 @@ be scaled according to the following options.
 * `scale` factor provided - image is scaled proportionally by the provided scale factor
 * `fit` array provided - image is scaled proportionally to fit within the passed width and height
 * `cover` array provided - image is scaled proportionally to completely cover the rectangle defined by the passed width and height
+* `link` - a URL to link this image to (shortcut to create an annotation)
+* `goTo` - go to anchor (shortcut to create an annotation)
+* `destination` - create anchor to this image
 
 When a `fit` or `cover` array is provided, PDFKit accepts these additional options:
 

docs/text.md

@@ -97,6 +97,8 @@ below.
 * `fill` - whether to fill the text (`true` by default)
 * `stroke` - whether to stroke the text
 * `link` - a URL to link this text to (shortcut to create an annotation)
+* `goTo` - go to anchor (shortcut to create an annotation)
+* `destination` - create anchor to this text
 * `underline` - whether to underline the text
 * `strike` - whether to strike out the text
 * `oblique` - whether to slant the text (angle in degrees or `true`)