Support programmatically several images sources

README.md

@@ -126,6 +126,18 @@ gm(200, 400, "#ddff99f3")
 .write("/path/to/brandNewImg.jpg", function (err) {
   // ...
 });
+
+// several source images to one file that allow pages (pdf, gif, tiff)
+gm(['/path/to/img1.jpg', '/path/to/img2.png'])
+.write("/path/to/pdfWithImagesInPages.pdf", function (err) {
+  // ...
+});
+
+// several source pdf pages to one file that allow pages even other pdf (pdf, gif, tiff)
+gm(['/path/to/file.pdf[0]', '/path/to/file.pdf[1]'])
+.write("/path/to/pdfWithSelectedPages.pdf", function (err) {
+  // ...
+});
 ```
 
 ## Streams

index.js

@@ -12,7 +12,7 @@ util.inherits(gm, EventEmitter);
 /**
  * Constructor.
  *
- * @param {String|Number} path - path to img source or ReadableStream or width of img to create
+ * @param {String|Number} path - path or array of paths to img source or ReadableStream or width of img to create
  * @param {Number} [height] - optional filename of ReadableStream or height of img to create
  * @param {String} [color] - optional hex background color of created img
  */
@@ -65,6 +65,13 @@ function gm (source, height, color) {
       source = source.substr(0, frames.index);
     }
   }
+
+  if (Array.isArray(source)) {
+    // then source is an array of paths
+    // this allow set programatically several sources 
+    this.in.apply(this, source); //ES6 this.in(...source);
+    source = undefined;
+  }
 
   this.source = source;