Add security policy

Author: MoOx

README.md

@@ -1,9 +1,12 @@
 # reduce-css-calc
 
 [![Build Status](https://github.com/MoOx/reduce-css-calc/workflows/Build/badge.svg)](https://github.com/MoOx/reduce-css-calc/actions)
+
 > Reduce CSS calc() function to the maximum.
 
-Particularly useful for packages like [rework-calc](https://github.com/reworkcss/rework-calc) or [postcss-calc](https://github.com/postcss/postcss-calc).
+Particularly useful for packages like
+[rework-calc](https://github.com/reworkcss/rework-calc) or
+[postcss-calc](https://github.com/postcss/postcss-calc).
 
 ## Installation
 
@@ -16,42 +19,42 @@ npm install reduce-css-calc
 ### `var reducedString = reduceCSSCalc(string, precision)`
 
 ```javascript
-var reduceCSSCalc = require('reduce-css-calc')
+var reduceCSSCalc = require("reduce-css-calc");
 
-reduceCSSCalc("calc(1 + 1)")
+reduceCSSCalc("calc(1 + 1)");
 // 2
 
-reduceCSSCalc("calc((6 / 2) - (4 * 2) + 1)")
+reduceCSSCalc("calc((6 / 2) - (4 * 2) + 1)");
 // -4
 
-reduceCSSCalc("calc(1/3)")
+reduceCSSCalc("calc(1/3)");
 // 0.33333
 
-reduceCSSCalc("calc(1/3)", 10)
+reduceCSSCalc("calc(1/3)", 10);
 // 0.3333333333
 
-reduceCSSCalc("calc(3rem * 2 - 1rem)")
+reduceCSSCalc("calc(3rem * 2 - 1rem)");
 // 5rem
 
-reduceCSSCalc("calc(2 * 50%)")
+reduceCSSCalc("calc(2 * 50%)");
 // 100%
 
-reduceCSSCalc("calc(120% * 50%)")
+reduceCSSCalc("calc(120% * 50%)");
 // 60%
 
-reduceCSSCalc("a calc(1 + 1) b calc(1 - 1) c")
+reduceCSSCalc("a calc(1 + 1) b calc(1 - 1) c");
 // a 2 b 0 c
 
-reduceCSSCalc("calc(calc(calc(1rem * 0.75) * 1.5) - 1rem)")
+reduceCSSCalc("calc(calc(calc(1rem * 0.75) * 1.5) - 1rem)");
 // 0.125rem
 
-reduceCSSCalc("calc(calc(calc(1rem * 0.75) * 1.5) - 1px)")
+reduceCSSCalc("calc(calc(calc(1rem * 0.75) * 1.5) - 1px)");
 // calc(1.125rem - 1px)
 
-reduceCSSCalc("-moz-calc(100px / 2)")
+reduceCSSCalc("-moz-calc(100px / 2)");
 // 50px
 
-reduceCSSCalc("-moz-calc(50% - 2em)")
+reduceCSSCalc("-moz-calc(50% - 2em)");
 // -moz-calc(50% - 2em)
 ```
 
@@ -61,7 +64,8 @@ See [unit tests](src/__tests__/index.js) for others examples.
 
 ## Contributing
 
-Work on a branch, install dev-dependencies, respect coding style & run tests before submitting a bug fix or a feature.
+Work on a branch, install dev-dependencies, respect coding style & run tests
+before submitting a bug fix or a feature.
 
 ```console
 git clone https://github.com/MoOx/reduce-css-calc.git
@@ -73,3 +77,9 @@ npm test
 ## [Changelog](CHANGELOG.md)
 
 ## [License](LICENSE-MIT)
+
+## Security contact information
+
+To report a security vulnerability, please use the
+[Tidelift security contact](https://tidelift.com/security). Tidelift will
+coordinate the fix and disclosure.