Fatal warning during client installation

> Steps to reproduce:
pip install couchbase

> Expected output:

Downloading/unpacking couchbase
Downloading couchbase-0.7.0.tar.gz
Running setup.py egg_info for package couchbase

> Actual output:

Downloading/unpacking couchbase
Downloading couchbase-0.7.0.tar.gz
Running setup.py egg_info for package couchbase
fatal: Not a git repository (or any of the parent directories): .git

> Tip:
def get_version():
try:
p = subprocess.Popen('git describe', stdout=subprocess.PIPE,
shell=True)
version = p.communicate()[0].strip()
except:
version = ''
return version