Small improvements to docularserver:

1.  use sendFile instead of sendfile to avoid deprecation error
2. Send site.json and structure.json via sendFile and not express static to avoid issues with different OS's (windows).
3. return 404 on files that are not found inside the resource folders to ease debugging
4. fallback to docular grunt config to try and figure out the target folder
5. throw an error if not target folder found that explains what needs to be fixed

tasks/docular.js

@@ -92,9 +92,12 @@ module.exports = function(grunt) {
 
         var path=require('path');
 
-        var options = grunt.config('docularserver') || {};
+        var options = grunt.config('docularserver') || grunt.config('docular');
         var port = requestedPort || options.port || 8000;
-        var targetDir = path.join(process.cwd(), options.targetDir)
+        var targetDir = path.join(process.cwd(), options.targetDir || options.docular_webapp_target);
+        if (targetDir === process.cwd()){
+            console.warn('you need to supply either docular.docular_webapp_target or docularserver.targetDir to use this server'.yellow);
+        }
 
         //Grab a new async promise
         var process_server_done = this.async();
@@ -114,15 +117,22 @@ module.exports = function(grunt) {
             app.use('/documentation', express.static(path.join(targetDir, '/documentation')));
             app.use('/sources', express.static(path.join(targetDir, '/sources')));
             app.use('/resources', express.static(path.join(targetDir, '/resources')));
-            app.use('/site.json', express.static(path.join(targetDir, '/site.json')));
-            app.use('/structure.json', express.static(path.join(targetDir, '/structure.json')));
 
-            app.use('/resources', function(req,res){
-                res.status(404).send('');
+            app.use(['/resources', '/configs', '/controller', '/documentation', '/sources'] , function(req,res){
+                res.status(404).send('file not found');
+            });
+
+            app.use('/site.json', function(req, res){
+                res.sendFile(path.join(targetDir, '/site.json'));
             });
 
+            app.use('/structure.json', function(req, res){
+                res.sendFile(path.join(targetDir, '/structure.json'));
+            });
+
+
             app.use('/', function (req, res){
-               res.sendfile(path.join(targetDir, '/index.html'));
+               res.sendFile(path.join(targetDir, '/index.html'));
             });
 
             var server = app.listen(port, function(){