Fix travis builds

Author: gpahal

pydgraph/meta.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-VERSION = '1.0.0a2'
+VERSION = '1.0.0a3'

setup.py

@@ -13,13 +13,23 @@
 # limitations under the License.
 
 import os
-from pypandoc import convert
+import sys
 
 try:
     from setuptools import setup
 except ImportError:
     from distutils.core import setup
 
+try:
+    from pypandoc import convert
+except ImportError as e:
+    # NOTE: error is thrown only for package build steps
+    if 'sdist' in sys.argv or 'bdist_wheel' in sys.argv:
+        raise e
+
+    def convert(f, _):
+        return open(f, 'r').read()
+
 from pydgraph.meta import VERSION
 
 README = os.path.join(os.path.dirname(__file__), 'README.md')