Update changelog and readme regarding to new release

CHANGELOG.md

@@ -1,5 +1,5 @@
 # Variability Analyser Changelog
-## [1.1.0]
+## [1.1.0] 2021-02-08
 ### Added
 * Optional argument `--lightcurve filename` to `detrend.py` script applying a trend function to a given filename
 * Optional argument `--sigma sig` to `detrend.py` script which is the standard deviations to filter input data before trend fitting

README.md

@@ -2,7 +2,7 @@
 [![Build Status](https://travis-ci.org/pbrus/variability-analyser.svg?branch=master)](https://travis-ci.org/pbrus/variability-analyser)
 [![Code](https://img.shields.io/badge/code-Python-blue.svg "Python")](https://www.python.org/)
 [![Code](https://img.shields.io/badge/code-Bash-green.svg "Bash")](https://www.gnu.org/software/bash/)
-[![GitHub release](https://img.shields.io/badge/ver.-1.0.0-brightgreen.svg "download")](https://github.com/pbrus/variability-analyser)
+[![GitHub release](https://img.shields.io/badge/ver.-1.1.0-brightgreen.svg "download")](https://github.com/pbrus/variability-analyser)
 [![License](https://img.shields.io/badge/license-MIT-yellow.svg "MIT license")](https://github.com/pbrus/variability-analyser/blob/master/LICENSE)
 
 This package allows to analyze the variability of stars and determine shapes of their light curves.