ENH: Remove path.py as its not a dependency

MAINT: Add try finally block to deal with exceptions

docs/deploy.py

@@ -2,7 +2,6 @@
 from __future__ import print_function
 from contextlib import contextmanager
 from glob import glob
-from path import path
 import os
 from os.path import abspath, basename, dirname, exists, isfile
 from shutil import move, rmtree
@@ -32,8 +31,11 @@ def ensure_not_exists(path):
 
 
 def main():
+    old_dir = os.getcwd()
     print("Moving to %s." % HERE)
-    with path(HERE):
+    os.chdir(HERE)
+
+    try:
         print("Building docs with 'make html'")
         check_call(['make', 'html'])
 
@@ -64,6 +66,8 @@ def main():
                 print("%s -> %s" % (file_, base))
                 ensure_not_exists(base)
                 move(file_, '.')
+    finally:
+        os.chdir(old_dir)
 
     print()
     print("Updated documentation branch in directory %s" % ZIPLINE_ROOT)