Update README.md

Author: napsternxg

README.md

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 # TwitterNER
 Twitter named entity extraction for WNUT 2016 http://noisy-text.github.io/2016/ner-shared-task.html
+
+## Submitted Solution [ST]
+See `Word2Vec.ipynb` for details on the original submitted solution for the task. 
+
+## Improved model
+See `Run Experiments.ipynb` for the details on the improved system.
+See `Run Experiment.ipynb` for the details on the improved system with test data.
+
+## Using the API
+The final system is packaged as an API specified in the folder NoisyNLP. More updates will be made to the API in upcoming days. 
+See `Run Experiment.ipynb` for API usage. 
+
+## Downloading Gazetteers
+See `Updated Gazetteers.ipynb`, `Extra Gazetteers.ipynb`, `Download Wikidata.ipynb`
+
+## Generating word clusters
+See `Gen new clusters.ipynb`
+
+## Data Pre-processing
+See `Data preprocessing.ipynb`
+
+## Preliminary comparison with RNN models
+See `KerasCharRNN.ipynb`, and `KerasWordRNN.ipynb`