Fix readme and docs

Author: sentenza

CONTRIBUTING.md

@@ -0,0 +1,62 @@
+## How to contribute?
+
+#### Did you find a bug?
+
+* **Ensure the bug was not already reported** by searching on GitHub
+  under [Project Issues](https://github.com/TheAlgorithms/Scala/issues).
+* Please avoid opening issues asking to be "assigned" to a particular algorithm. This merely creates unnecessary noise
+  for maintainers. Instead, please submit your implementation in a pull request, and it will be evaluated by project
+  maintainers.
+* If you are unable to find an open issue referring to the same problem, depending on the type of issue follow the
+  appropriate steps:
+
+#### Do you want to contribute to the documentation?
+
+- Please read the documentation in
+  here [Contributing to the Documentation](https://github.com/TheAlgorithms/Scala/blob/master/CONTRIBUTING.md),
+  [open a new one issue](https://github.com/TheAlgorithms/Scala/issues/new), make changes and then create a pull
+  request, it will be put under review and accepted if it is appropriate.
+
+#### Do you want to add a new feature?
+
+* [Open a new one issue](https://github.com/TheAlgorithms/Scala/issues/new). Be sure to include a **title and a clear
+  description** and a **test case** demonstrating the new feature that you want to add to the project.
+
+##### Contributing to Algorithms (Make sure to check all the points below before opening a PR)
+
+* Make sure you follow proper coding standards and naming conventions.
+    * Please
+      use [Binary Search Implementation](https://github.com/TheAlgorithms/Scala/blob/master/src/main/scala/Search/BinarySearch.scala)
+    *
+  and [Binary Search Test](https://github.com/TheAlgorithms/Scala/blob/master/src/test/scala/Search/BinarySearchSpec.scala)
+  as a reference.
+* Add the algorithm implementation as an object and not as a class
+* Add proper comments about the algorithm implementation and the functions present in the algorithm
+* Add a test spec in the test folder under the same domain as that of your algorithm. **PRs without a test spec would
+  not be accepted!**
+* Add at least 1 positive and 1 negative test in the test spec
+* Raise a PR for the algorithm object file and the test spec
+* [How to write a test case in Scala](http://www.scalatest.org/user_guide/writing_your_first_test)
+
+#### Contributing to Tests
+
+* You can contribute tests for a specific algorithm
+* Add as many tests as you can and try to cover all the borderline test cases
+* Open a PR with for your testSpec
+* Make sure you are not adding redundant test cases
+* If you see that the algorithm fails for a particular test case, then open an issue with proper explanation.
+* [How to write a test case in Scala](http://www.scalatest.org/user_guide/writing_your_first_test)
+
+#### Do you want to fix a bug?
+
+* [Open a new issue](https://github.com/TheAlgorithms/Scala/issues/new).Be sure to include a **title and a clear
+  description** and a **test case** demonstrating the expected behaviour that is not occurring.
+
+#### **Do you have questions about the source code?**
+
+* Ask any question about how to use the repository in
+  the [TheAlgorithms room in GITTER](https://gitter.im/TheAlgorithms/community?source=orgpage#) or
+  [open a new one issue](https://github.com/TheAlgorithms/Scala/issues/new)
+
+:+1::tada: That's all you need to know about the process now it's your turn to help us improve the repository, thank you
+again! :+1::tada: