Create tech stack docs (techstack.yml and techstack.md)

[stack-file[bot]]

Adding tech stack documentation to allow anyone to easily see what is being used in this repo without digging through config files. Two files are being added: techstack.yml and techstack.md. techstack.yml contains data on all the technologies being used in this repo. techstack.md is a visualization of the YML file and displays the tech stack data in a pretty Markdown file.

💡 Protip: techstack.md contains a comment at the top of the file that the following README snippet (with and without the logos) at the top of the file as a comment:

<--- Readme.md Snippet without images Start --->

Tech Stack

luankevinferreira/expenses is built on the following main stack:

• Gradle – Java Build Tools
• Java – Languages
• Android SDK – Frameworks (Full Stack)
• Mockito – Testing Frameworks
• Codecov – Code Coverage
• Android OS – Operating Systems
• Travis CI – Continuous Integration

Full tech stack here

<--- Readme.md Snippet without images End --->

Get the code:

## Tech Stack
luankevinferreira/expenses is built on the following main stack:

- [Gradle](https://www.gradle.org/) – Java Build Tools
- [Java](https://www.java.com) – Languages
- [Android SDK](http://developer.android.com) – Frameworks (Full Stack)
- [Mockito](https://site.mockito.org/) – Testing Frameworks
- [Codecov](https://codecov.io/) – Code Coverage
- [Android OS](https://www.android.com) – Operating Systems
- [Travis CI](http://travis-ci.com/) – Continuous Integration

Full tech stack [here](/techstack.md)

---

<--- Readme.md Snippet with images Start --->

Tech Stack

luankevinferreira/expenses is built on the following main stack:

• Gradle – Java Build Tools
• Java – Languages
• Android SDK – Frameworks (Full Stack)
• Mockito – Testing Frameworks
• Codecov – Code Coverage
• Android OS – Operating Systems
• Travis CI – Continuous Integration

Full tech stack here

<--- Readme.md Snippet with images End --->

Get the code:

## Tech Stack
luankevinferreira/expenses is built on the following main stack:

- <img width='25' height='25' src='https://img.stackshare.io/service/975/gradlephant-social-black-bg.png' alt='Gradle'/> [Gradle](https://www.gradle.org/) – Java Build Tools
- <img width='25' height='25' src='https://img.stackshare.io/service/995/K85ZWV2F.png' alt='Java'/> [Java](https://www.java.com) – Languages
- <img width='25' height='25' src='https://img.stackshare.io/service/1010/m8jf0po4imu8t5eemjdd.png' alt='Android SDK'/> [Android SDK](http://developer.android.com) – Frameworks (Full Stack)
- <img width='25' height='25' src='https://img.stackshare.io/service/2021/4y634TJm_400x400.jpg' alt='Mockito'/> [Mockito](https://site.mockito.org/) – Testing Frameworks
- <img width='25' height='25' src='https://img.stackshare.io/service/2673/Codecov_Mark_Circle_Pink.png' alt='Codecov'/> [Codecov](https://codecov.io/) – Code Coverage
- <img width='25' height='25' src='https://img.stackshare.io/service/9586/ZvmtaSXW_400x400.jpg' alt='Android OS'/> [Android OS](https://www.android.com) – Operating Systems
- <img width='25' height='25' src='https://img.stackshare.io/service/460/Lu6cGu0z_400x400.png' alt='Travis CI'/> [Travis CI](http://travis-ci.com/) – Continuous Integration

Full tech stack [here](/techstack.md)