Update readme with contributing guide and create github templates (#110)

.github/ISSUE_TEMPLATE/bug.md

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+---
+name: Bug
+about: File a bug report.
+title: 'bug'
+---
+
+## Expected Behavior
+<!--- Tell us what should happen -->
+
+## Current Behavior
+<!--- Tell us what happens instead of the expected behavior -->
+
+## Possible Solution
+<!--- Not obligatory, but suggest a fix/reason for the bug, -->
+
+## Steps to Reproduce
+<!--- Provide a link to a live example, or an unambiguous set of steps to -->
+<!--- reproduce this bug. Include code to reproduce, if relevant -->
+1.
+2.
+3.
+4.
+
+### Screenshots
+<!--- Provide any screenshots or links to deployments -->
+
+### Browsers Affected
+<!-- Check all that apply -->
+- [ ] Chrome
+- [ ] Firefox
+- [ ] Edge
+- [ ] Safari 11
+- [ ] Safari 10
+- [ ] IE 11
+
+## Detailed Description
+<!--- Provide a detailed description of the change or addition you are proposing -->

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request
+about: File a Feature Request.
+title: 'Feature Request'
+---
+
+<!---
+Before filing an issue, please review the following:
+  Existing Features: https://github.com/hossainemruz/toha#features
+  Project Roadmap: https://github.com/hossainemruz/toha#project-roadmap
+-->
+
+### Describe the solution you'd like
+
+<!--
+  Provide a clear and concise description of what you want to happen.
+-->
+
+### Describe alternatives you've considered
+
+<!--
+  Let us know about other solutions you've tried or researched.
+-->
+
+### Additional context
+
+<!--
+  Is there anything else you can add about the proposal?
+  You might want to link to related issues here, if you haven't already.
+-->

.github/ISSUE_TEMPLATE/question.md

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+---
+name: Question
+about: Ask a general question.
+---
+
+<!--- Use this template for general questions. For bug reports or feature requests, please use those templates -->
+
+### Question
+<!--- Insert your question here. Please provide as much detail as possible. -->

.github/PULL_REQUEST_TEMPLATE.md

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+### Issue
+<!--- Insert a link to the associated github issue here. -->
+
+### Description
+
+<!-- Insert details about what the changes being proposed are. -->
+
+### Test Evidence
+
+<!-- Provide screenshot evidence and/or testing steps to validate the proposed changes. -->