Various readme improvements

DIRECTORY.md

@@ -16,6 +16,7 @@
     * [Association](https://github.com/TheAlgorithms/Jupyter/blob/master/machine_learning/Associative%20Mining/Association.ipynb)
   * Basics Of Tensorflow
     * [Basic Of Tensorflow](https://github.com/TheAlgorithms/Jupyter/blob/master/machine_learning/Basics%20of%20tensorflow/Basic%20of%20TensorFlow.ipynb)
+  * [Bayesian Belief Networks](https://github.com/TheAlgorithms/Jupyter/blob/master/machine_learning/bayesian_belief_networks.ipynb)
   * Cosine-Similarity
     * [Similarity](https://github.com/TheAlgorithms/Jupyter/blob/master/machine_learning/Cosine-Similarity/Similarity.ipynb)
   * Dbscan
@@ -65,7 +66,6 @@
     * [Scikit-Learn](https://github.com/TheAlgorithms/Jupyter/blob/master/machine_learning/Scikit-learn/Scikit-learn.ipynb)
   * Support Vector Machine
     * [Support Vector Machine](https://github.com/TheAlgorithms/Jupyter/blob/master/machine_learning/Support_Vector_Machine/Support%20Vector%20Machine.ipynb)
-  * [Bayesian Belief Network](./machine_learning/bayesian_belief_networks.ipynb)
 
 ## Neural Network
   * [02-Imdb-Binary-Classification](https://github.com/TheAlgorithms/Jupyter/blob/master/neural_network/02-imdb-binary-classification.ipynb)

README.md

@@ -1,23 +1,34 @@
-## Jupyter ![](https://img.shields.io/github/forks/TheAlgorithms/Jupyter?style=social) ![](https://img.shields.io/github/stars/TheAlgorithms/Jupyter?style=social) ![](https://img.shields.io/github/watchers/TheAlgorithms/Jupyter?style=social) <br>
-
-![](https://img.shields.io/github/repo-size/TheAlgorithms/Jupyter) ![](https://img.shields.io/github/downloads/TheAlgorithms/Jupyter/total)  [![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/TheAlgorithms/Jupyter)<br>
-![](https://img.shields.io/github/issues/TheAlgorithms/Jupyter?color=green) ![](https://img.shields.io/github/issues-pr/TheAlgorithms/Jupyter?color=green) ![](https://img.shields.io/github/last-commit/TheAlgorithms/Jupyter) ![](https://img.shields.io/github/contributors/TheAlgorithms/Jupyter)
+## The Algorithms - Jupyter
+
+![Repo size](https://img.shields.io/github/repo-size/TheAlgorithms/Jupyter)
+[![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/TheAlgorithms/Jupyter)
+![Number of issues](https://img.shields.io/github/issues/TheAlgorithms/Jupyter?color=green)
+![Number of PRs](https://img.shields.io/github/issues-pr/TheAlgorithms/Jupyter?color=green)<br>
+![Latest commit](https://img.shields.io/github/last-commit/TheAlgorithms/Jupyter)
+![All contributors](https://img.shields.io/github/contributors/TheAlgorithms/Jupyter)
 [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/TheAlgorithms/Jupyter/master)
 
-## Clone git repository
-
-```sh
-    $ git clone "https://github.com/TheAlgorithms/Jupyter.git"
-```
+## Getting started
 
 You can run and edit the algorithms or contribute to them using [Gitpod.io](https://www.gitpod.io/), a free online development environment, with a single click.
 
 [![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](http://gitpod.io/#https://github.com/TheAlgorithms/Jupyter)
 
+## Contributing New Algorithms
+
+* Make your pull requests to be **specific** and **focused**. Instead of contributing "several algorithms" all at once contribute them all one by one separately (i.e. one pull request for "Logistic Regression", another one for "K-Means", and so on).
+
+* Every new algorithm must have:
+	* **Source code** with comments and readable namings
+	* **Math** being explained in README.md along with the code
+	* **Jupyter demo notebook** with an example of how this new algorithm may be applied
+
+If you're adding new **datasets** they need to be saved in the `/data` folder. CSV files are preferable. The size of the file should not be greater than `30Mb`.
+
 ## Contributing
 
-Before removing any bug, or adding new algorithm please do the following: **[Check Contribution Guidelines Before Contribution](Contributing.md)** and also please read **[CODE OF CONDUCT](CODE_OF_CONDUCT.md)**.
+Before removing any bug, or adding new algorithms please read our [Contribution Guidelines](Contributing.md)** and our **[Code of Conduct](CODE_OF_CONDUCT.md)**.
 
 ## License
 
-Licensed under the [MIT License](LICENSE.md) 
+All the code is licensed under the [MIT License](LICENSE.md)