removed --list option for older git installations. using sys.version_info as tuple for python 2.6 support.

wakatime/__init__.py

@@ -111,8 +111,7 @@ def get_api_key(configFile):
 
 def get_user_agent(plugin):
     ver = sys.version_info
-    python_version = '%d.%d.%d.%s.%d' % (ver.major, ver.minor, ver.micro,
-        ver.releaselevel, ver.serial)
+    python_version = '%d.%d.%d.%s.%d' % (ver[0], ver[1], ver[2], ver[3], ver[4])
     user_agent = 'wakatime/%s (%s) Python%s' % (__version__,
         platform.platform(), python_version)
     if plugin:

wakatime/projects/git.py

@@ -63,7 +63,7 @@ class Git(BaseProject):
         stdout = None
         try:
             stdout, stderr = Popen([
-                    'git', 'branch', '--no-color', '--list'
+                    'git', 'branch', '--no-color'
                 ], stdout=PIPE, stderr=PIPE, cwd=self._project_base()
             ).communicate()
         except OSError: