added practicals and solutions for TF

new file

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+# link to open notes, etc
+python3
+import jrpytensorflow as jrtf
+jrtf.__file__
+<return path>
+'/home/tanu/anaconda3/envs/lidoML2/lib/python3.6/site-packages/jrpytensorflow/vignettes'
+cd into the path
+access files as necessary

tensorflow/notes

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+#==============================
+# Date: 23rd January 2020
+# LIDO ML: Tensorflow training
+# Day 1
+#==============================
+v2: Tensorflow	
+	pytorch
+		keras
+
+# Ben
+Wiki and neofetch
+
+# Training and Test sets
+nobs can be different 
+BUT 
+nfeatures should say the same between training and test sets
+
+# Book
+Goodfellow book on ML
+
+# Pej
+XGBoost: python library that does Random Forst, Decision trees, etc...(possibly instead of?!)
+Lido ML meeting: Friday, 31st Jan in B62, 10-12 @Birkbeck