__main__ -b updated for datetime.

Fixes issue #2. On platforms with datetime, an exception will still be
raised, but that's alright; at least it will be descriptive.

doc/conf.py

@@ -47,7 +47,7 @@
 # The short X.Y version.
 version = '3.0'
 # The full version, including alpha/beta/rc tags.
-release = '3.0.0'
+release = '3.0.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

setup.py

@@ -23,7 +23,7 @@ def build_extension(self, ext):
 
 dist = setup(
     name='uptime',
-    version='3.0.0',
+    version='3.0.1',
     description='Cross-platform uptime library',
     long_description='''\
 This module provides a cross-platform way to retrieve system uptime and boot time.

src/__main__.py

@@ -37,5 +37,4 @@
 
         sys.stdout.write('Uptime: %s.\n' % ', '.join(parts))
     else:
-        boot = boottime()
-        sys.stdout.write(time.strftime('Booted: %c.\n', boot))
+        sys.stdout.write(boottime().strftime('Booted: %c.\n'))