Expose content dir and set shell file

Author: ckrowland

build.zig

@@ -132,7 +132,7 @@ pub fn emccStep(
         use_preload_plugins: bool = false,
         embed_paths: ?[]const EmccFilePath = null,
         preload_paths: ?[]const EmccFilePath = null,
-        shell_file_path: ?[]const u8 = null,
+        shell_file_path: ?[]const u8 = "content/shell_minimal.html",
         install_dir: std.Build.InstallDir,
     },
 ) *std.Build.Step {

build.zig.zon

@@ -1,10 +1,11 @@
 .{
     .name = "zemscripten",
-    .version = "0.2.0-dev",
+    .version = "0.2.1-dev",
     .paths = .{
         "build.zig",
         "build.zig.zon",
         "src",
+        "content",
         "LICENSE",
         "README.md",
     },