Enable testing with pypytox_add_pypy

This involved:

- Adding "pypy" to the `tox.ini` envlist.
- Adding `# doctest: +IGNORE_EXCEPTION_DETAIL` to 2 doctests, because the
  traceback message text is slightly different on PyPy.

2 files changed, 3 insertions, 3 deletions

diff --git a/tests/test_template.txt b/tests/test_template.txt
index f3466f2..1313d34 100644
--- a/tests/test_template.txt
+++ b/tests/test_template.txt
@@ -6,7 +6,7 @@ example::
     'Hi Ian'
     >>> Template('Hi {{repr(name)}}').substitute(name='Ian')
     "Hi 'Ian'"
-    >>> Template('Hi {{name+1}}').substitute(name='Ian')
+    >>> Template('Hi {{name+1}}').substitute(name='Ian')  # doctest: +IGNORE_EXCEPTION_DETAIL
     Traceback (most recent call last):
         ...
     TypeError: cannot concatenate 'str' and 'int' objects at line 1 column 6
@@ -125,7 +125,7 @@ for a variable, if no value is given::
     >>> sub('{{default x=1}}{{x}}')
     '1'
     >>> # The normal case:
-    >>> sub('{{x}}')
+    >>> sub('{{x}}')  # doctest: +IGNORE_EXCEPTION_DETAIL
     Traceback (most recent call last):
         ...
     NameError: name 'x' is not defined at line 1 column 3
diff --git a/tox.ini b/tox.ini
index d50d433..b54d5ec 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27, py34, py35
+envlist = py26, py27, py34, py35, pypy
 
 [testenv]
 deps=