Merge pull request #19 from mblawrence/master

Create figure captions

Author: raghur

README.md

@@ -36,6 +36,7 @@ Options
 
 You have a couple of formatting options via attributes of the fenced code block to control the rendering
 
+- Pandoc caption and automatic image numbering - Use `{.mermaid caption="Caption Text Here"}`
 - Image Format - Use `{.mermaid format=svg}`     Default is png
 - Width  - Use `{.mermaid width=400}`     default with is 500
 - Theme - Use `{.mermaid theme=forest}` default is 'default'. Corresponds to `--theme`  flag of mermaid.cli
@@ -56,4 +57,4 @@ JSON and CSS configuration
 
 Mermaid cli allows you to specify additional options in a json configuration file and a css file. `mermaid-filter`
 will look in the current directory for `.mermaid-config.json` and `.mermaid.css` and if found, pass them in to 
-mermaid cli.
+mermaid cli.

index.js

@@ -18,8 +18,9 @@ function mermaid(type, value, format, meta) {
     var attrs = value[0],
         content = value[1];
     var classes = attrs[1];
-    var options = {width: '500', format: 'png', loc: 'inline', theme: "default"};
+    var options = {width: '500', format: 'png', loc: 'inline', theme: "default", caption: ""};
     var configFile = path.join(folder, ".mermaid-config.json")
+    
     var confFileOpts = ""
     if (fs.existsSync(configFile)) {
         confFileOpts += " -c " + configFile
@@ -73,13 +74,17 @@ function mermaid(type, value, format, meta) {
         mv(savePath, newPath);
     }
 
+    var fig = "";
 
+    if (options.caption != "") {
+        fig = "fig:";
+    }
     return pandoc.Para(
         [
             pandoc.Image(
                 ['', [], []],
-                [],
-                [newPath, ""]
+                [pandoc.Str(options.caption)],
+                [newPath, fig]
             )
     ]);
 }