Add deployment button for Hostinger in README

[Minijus-Sa]

This PR has the objective of .

Changes

I've added Hostinger 1-click installation badge for fast and easy intall. You can change the URL to contain the referral code to earn commission on every installation. You can also read more here: https://www.hostinger.com/support/deploy-on-hostinger-button/

Checklist

Use this checklist to ensure the quality of pull requests that include new code and/or make changes to existing code.

• Source Code guidelines:
  • Includes unit tests
  • New functions have docstrings with examples that can be run with doctest
  • New functions are included in API docs
  • Docstrings include notes for any changes to API or behavior
  • All changes are documented in docs/changes.rst
• Versioning and history tracking guidelines:
  • Using atomic commits whenever possible
  • Commits are reversible whenever possible
  • There are no incomplete changes in the pull request
  • There is no accidental garbage added to the source code
• Testing guidelines:
  • Tested locally using tox / pytest
  • Rebased to master branch and tested before sending the PR
  • Automated testing passes (see CI)
  • Unit test coverage has not decreased (see Coveralls)
• State of these changes is:
  • Just a proof of concept
  • Work in progress / Further changes needed
  • Ready to review
  • Ready to merge

[coveralls]

Pull Request Test Coverage Report for Build 20215409710

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 4 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.004%) to 90.92%

---

Files with Coverage Reduction	New Missed Lines	%
petl/version.py	4	77.78%

Totals
Change from base Build 16950813691:	-0.004%
Covered Lines:	13468
Relevant Lines:	14813

---

💛 - Coveralls