now using nginx and subfolder app

Procfile

@@ -0,0 +1 @@
+web: vendor/bin/heroku-php-nginx -C nginx_app.conf public/

nginx_app.conf

@@ -0,0 +1,48 @@
+index index.php index.html;
+charset UTF-8;
+default_type text/html;
+
+gzip on;
+gzip_disable "msie6";
+
+gzip_vary on;
+gzip_proxied any;
+gzip_comp_level 6;
+gzip_buffers 16 8k;
+gzip_min_length 10;
+gzip_http_version 1.1;
+gzip_types application/json;
+
+client_max_body_size 10M;
+
+location / {
+    # try to serve file directly, fallback to rewrite
+    try_files $uri @rewriteapp;
+}
+
+location @rewriteapp {
+    # rewrite all to app.php
+    rewrite ^(.*)$ /v1/index.php/?req=$1 last;
+}
+
+location /api {
+  rewrite ^/api\/v1\/processes[\/]?$ /v1/processes.php;
+  rewrite ^/api\/v1\/processes\/([0-9]+)[\/]?$ /v1/process.php?id=$1;
+  rewrite ^/api\/v1\/processes\/([0-9]+)\/tags[\/]?$ /v1/process_tags.php?id=$1;
+  rewrite ^/api\/v1\/processes\/([0-9]+)\/timeline[\/]?$ /v1/process_timeline.php?id=$1;
+  rewrite ^/api\/v1\/tags\/([0-9]+)[\/]?$ /v1/tag.php?id=$1;
+  rewrite ^/api\/v1\/tags\/([0-9]+)\/records[\/]?$ /v1/tag_records.php?id=$1;
+}
+
+location = /favicon.ico {
+  log_not_found off;
+  access_log off;
+}
+
+location ~* \.(xml|ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|css|rss|atom|js|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ {
+  try_files $uri =404;
+  expires max;
+  add_header Pragma "public";
+  add_header Cache-Control "public, must-revalidate, proxy-revalidate";
+  access_log off;
+}