Update issue templates

Buf/Performance Issue
Installation Issue
Documentation Issue
Feature Request

.github/ISSUE_TEMPLATE/bug-performance-issue.md

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+---
+name: Bug/Performance Issue
+about: Use this template for reporting a bug or a performance issue.
+title: "[BUG/PERFORMANCE] - Short meaningful description of bug/performance issue"
+labels: ''
+assignees: ''
+
+---
+
+<em>Please make sure that this is a bug. As per our [GitHub Policy](https://github.com/zurutech/ashpy/blob/master/ISSUES.md), we only address code/doc bugs, performance issues, feature requests and build/installation issues on GitHub. </em>
+
+**System information**
+- OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
+- AshPy version:
+- TensorFlow version (use command below):
+- Python version:
+- CUDA/cuDNN version:
+- GPU model and memory:
+
+You can collect TensorFlow informations from their environment capture [script](https://github.com/tensorflow/tensorflow/tree/master/tools/tf_env_collect.sh). You can also obtain the TensorFlow version with: `python -c "import tensorflow as tf; print(tf.version.GIT_VERSION, tf.version.VERSION)"`
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Code to reproduce the issue**
+Provide a reproducible test case that is the bare minimum necessary to generate the problem.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Other info / logs**
+Include any logs or source code that would be helpful to diagnose the problem. If including tracebacks, please include the full traceback. Large logs and files should be attached.

.github/ISSUE_TEMPLATE/documentation-issue.md

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+---
+name: Documentation Issue
+about: Use this template for documentation related
+title: "[DOC] - Short meaningful description of documentation issue"
+labels: ''
+assignees: ''
+
+---
+
+<em>Please make sure that this is a bug. As per our [GitHub Policy](https://github.com/zurutech/ashpy/blob/master/ISSUES.md), we only address code/doc bugs, performance issues, feature requests and build/installation issues on GitHub.</em>
+
+## URL(s) with the issue:
+Please provide a link to the documentation entry.
+
+## Description of issue (what needs changing):
+
+### Clear description
+For example, why should someone use this method? How is it useful?
+
+### Correct links
+Is the link to the source code correct?
+
+### Parameters defined
+Are all parameters defined and formatted correctly?
+
+### Returns defined
+Are return values defined?
+
+### Raises listed and defined
+Are the errors defined?
+
+### Usage example
+Is there a usage example?
+
+### Request visuals, if applicable
+Are there currently visuals? If not, will it clarify the content?

.github/ISSUE_TEMPLATE/feature-request.md

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+---
+name: Feature Request
+about: Use this template for raising a feature request
+title: "[FEATURE] - Short meaningful description of feature request"
+labels: ''
+assignees: ''
+
+---
+
+<em>Please make sure that this is a bug. As per our [GitHub Policy](https://github.com/zurutech/ashpy/blob/master/ISSUES.md), we only address code/doc bugs, performance issues, feature requests and build/installation issues on GitHub.</em>
+
+**System information**
+- AshPy version (you are using):
+- Are you willing to contribute it (Yes/No):
+
+**Describe the feature and the current behavior/state**
+
+**Will this change the current api? How?**
+
+**Who will benefit with this feature?**
+
+**Any Other info**

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Use this template for raising a feature request
+title: "[FEATURE] - Short meaningful description of feature request"
+labels: ''
+assignees: ''
+
+---
+
+<em>Please make sure that this is a bug. As per our [GitHub Policy](https://github.com/zurutech/ashpy/blob/master/ISSUES.md), we only address code/doc bugs, performance issues, feature requests and build/installation issues on GitHub.</em>
+
+**System information**
+- AshPy version (you are using):
+- Are you willing to contribute it (Yes/No):
+
+**Describe the feature and the current behavior/state**
+
+**Will this change the current api? How?**
+
+**Who will benefit with this feature?**
+
+**Any Other info**

.github/ISSUE_TEMPLATE/installation-issue.md

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+---
+name: Installation Issue
+about: Use this template for installation issues.
+title: "[INSTALLATION] - Short meaningful description of installation issue"
+labels: ''
+assignees: ''
+
+---
+
+<em>Please make sure that this is a bug. As per our [GitHub Policy](https://github.com/zurutech/ashpy/blob/master/ISSUES.md), we only address code/doc bugs, performance issues, feature requests and build/installation issues on GitHub. </em>
+
+**System information**
+- OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
+- AshPy version:
+- TensorFlow version:
+- Python version:
+- Installed using virtualenv? pip?:
+- CUDA/cuDNN version:
+- GPU model and memory:
+
+**Describe the problem**
+
+**Provide the exact sequence of commands / steps that you executed before running into the problem**
+
+**Any other info / logs**
+Include any logs or source code that would be helpful to diagnose the problem. If including tracebacks, please include the full traceback. Large logs and files should be attached.