update required version

Author: xinyzhou

requirements.txt

@@ -16,6 +16,6 @@ azure-cognitiveservices-vision-contentmoderator>=1.0.0  # sample won't work with
 azure-cognitiveservices-vision-customvision>=0.4.0  # sample won't work with previous versions
 azure-cognitiveservices-vision-face
 azure-cognitiveservices-anomalydetector>=0.2.0 #  sample won't work with previous versions
-azure-cognitiveservices-inkrecognizer>=1.0.0
+azure-cognitiveservices-inkrecognizer>=1.0.0b1
 wxpython>=4.0.6
 pandas