Issue 116 - Document the libadblockplus API

include/AdblockPlus/AppInfo.h

Index: include/AdblockPlus/AppInfo.h
===================================================================
--- a/include/AdblockPlus/AppInfo.h
+++ b/include/AdblockPlus/AppInfo.h
@@ -22,14 +22,47 @@
 
 namespace AdblockPlus
 {
+  /**
+   * Information about the app using libadblockplus.
+   */
   struct AppInfo
   {
+    /**
+     * Optional unique ID of the app.
+     * @deprecated This field is not used anywhere, and will be removed.
+     */
     std::string id;
+
+    /**
+     * Current version of the app, in
+     * [Mozilla toolkit version format](https://developer.mozilla.org/en/docs/Toolkit_version_format).
+     */
     std::string version;
+
+    /**
+     * Technical name of the app (not user visible).
+     */
     std::string name;
+
+    /**
+     * Technical name of the platform the app is running on (not user visible).
+     */
     std::string application;
+
+    /**
+     * Current version of the platform the app is running on.
+     */
     std::string applicationVersion;
+
+    /**
+     * Locale to use, as a
+     * [Mozilla locale code](https://wiki.mozilla.org/L10n:Locale_Codes).
+     */
     std::string locale;
+
+    /**
+     * Whether the app is a development build, the default is `false`.
+     */
     bool developmentBuild;
 
     AppInfo() : developmentBuild(false) {}