Add push-to-deploy support

Author: josegonzalez

CHECKS

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+/                       CakePHP

Procfile

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+web: python server.py --port $PORT --dir blog/html

bin/post_compile

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+#!/usr/bin/env bash
+set -eo pipefail
+[[ -n $BIN_DIR ]] && source $BIN_DIR/utils
+
+main() {
+  tinker --build
+}
+
+main "$@"

requirements.txt

@@ -1 +1,15 @@
-tinkerer>=1.4
+alabaster==0.7.8
+Babel==2.3.4
+cssselect==0.9.1
+docutils==0.12
+imagesize==0.7.1
+Jinja2==2.8
+lxml==3.6.0
+MarkupSafe==0.23
+Pygments==2.1.3
+pyquery==1.2.13
+pytz==2016.4
+six==1.10.0
+snowballstemmer==1.2.1
+Sphinx==1.4.1
+Tinkerer==1.5

server.py

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+#! /usr/bin/env python
+
+import posixpath
+import argparse
+import urllib
+import os
+
+from SimpleHTTPServer import SimpleHTTPRequestHandler
+from BaseHTTPServer import HTTPServer
+
+
+class RootedHTTPServer(HTTPServer):
+
+    def __init__(self, base_path, *args, **kwargs):
+        HTTPServer.__init__(self, *args, **kwargs)
+        self.RequestHandlerClass.base_path = base_path
+
+
+class RootedHTTPRequestHandler(SimpleHTTPRequestHandler):
+
+    def translate_path(self, path):
+        path = posixpath.normpath(urllib.unquote(path))
+        words = path.split('/')
+        words = filter(None, words)
+        path = self.base_path
+        for word in words:
+            drive, word = os.path.splitdrive(word)
+            head, word = os.path.split(word)
+            if word in (os.curdir, os.pardir):
+                continue
+            path = os.path.join(path, word)
+        return path
+
+
+def main(HandlerClass=RootedHTTPRequestHandler, ServerClass=RootedHTTPServer):
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--port', '-p', default=os.getenv('PORT', 5000), type=int)
+    parser.add_argument('--dir', '-d', default=os.getcwd(), type=str)
+    args = parser.parse_args()
+
+    server_address = ('', args.port)
+
+    httpd = ServerClass(args.dir, server_address, HandlerClass)
+
+    sa = httpd.socket.getsockname()
+    print "Serving HTTP on", sa[0], "port", sa[1], "..."
+    httpd.serve_forever()
+
+if __name__ == '__main__':
+    main()