add module requirement

requirements.txt

@@ -12,3 +12,4 @@ tqdm
 soundfile
 phonemizer
 bokeh==1.4.0
+inflect

requirements_tests.txt

@@ -12,6 +12,7 @@ flask
 scipy
 tqdm
 soundfile
+inflect
 phonemizer
 bokeh==1.4.0
 nose

setup.py

@@ -106,8 +106,8 @@ setup(
         "matplotlib",
         "Pillow",
         "flask",
-        # "lws",
         "tqdm",
+        "inflect",
         "bokeh==1.4.0",
         "soundfile",
         "phonemizer @ https://github.com/bootphon/phonemizer/tarball/master",