updating readme badges (#36)

README.md

@@ -1,8 +1,16 @@
-# Golang Rules Engine  [![Build Status][ci-img]][ci] [![codecov](https://codecov.io/gh/nikunjy/rules/branch/master/graph/badge.svg)](https://codecov.io/gh/nikunjy/rules)
-Rules engine written in golang with the help of antlr.
+[![Go Report Card](https://goreportcard.com/badge/github.com/nikunjy/rules?style=flat-square)](https://goreportcard.com/report/github.com/nikunjy/rules)
+[![PkgGoDev](https://pkg.go.dev/badge/github.com/github.com/nikunjy/rules)](https://pkg.go.dev/github.com/nikunjy/rules)
+[![Release](https://img.shields.io/github/v/release/nikunjy/rules?sort=semver&style=flat-square)](https://github.com/nikunjy/rules/releases/latest)
+[![Release](https://img.shields.io/github/go-mod/go-version/nikunjy/rules?style=flat-square)](https://github.com/nikunjy/rules/releases/latest)
+[![Maintenance](https://img.shields.io/badge/Maintained%3F-yes-green.svg?style=flat-square)](https://github.com/nikunjy/rules/commits)
+[![License](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)
+[![GitHub stars](https://img.shields.io/github/stars/nikunjy/rules?style=flat-square&label=Star&maxAge=2592000)](https://github.com/nikunjy/rules/stargazers/)
+
+# Golang Rules Engine
 
-This package will be very helpful in situations where you have a generic rule and want to verify if your values (specified using `map[string]interface{}`) satisfy the rule. 
+Rules engine written in golang with the help of antlr.
 
+This package will be very helpful in situations where you have a generic rule and want to verify if your values (specified using `map[string]interface{}`) satisfy the rule.
 
 Here are some examples:
 
@@ -12,7 +20,7 @@ Here are some examples:
   parser.Evaluate("x lt 1", map[string]interface{}{"x": 1})
   parser.Evaluate("x < 1", map[string]interface{}{"x": 1})
   parser.Evaluate("x gt 1", map[string]interface{}{"x": 1})
-  
+
   parser.Evaluate("x.a == 1 and x.b.c <= 2", map[string]interface{}{
     "x": map[string]interface{}{
        "a": 1,
@@ -21,47 +29,51 @@ Here are some examples:
        },
     },
   })
-  
+
 
   parser.Evaluate("y == 4 and (x > 1)", map[string]interface{}{"x": 1})
 
   parser.Evaluate("y == 4 and (x IN [1,2,3])", map[string]interface{}{"x": 1})
 
   parser.Evaluate("y == 4 and (x eq 1.2.3)", map[string]interface{}{"x": "1.2.3"})
-  
+
 ```
 
 ## Operations
+
 All the operations can be written capitalized or lowercase (ex: `eq` or `EQ` can be used)
 
 Logical Operations supported are `AND OR`
 
 Compare Expression and their definitions (a|b means you can use either one of the two a or b):
+
 ```
-eq|==: equals to 
+eq|==: equals to
 ne|!=: not equals to
-lt|<: less than 
+lt|<: less than
 gt|>: greater than
 le|<=: less than equal to
-ge|>=: greater than equal to 
-co: contains 
-sw: starts with 
+ge|>=: greater than equal to
+co: contains
+sw: starts with
 ew: ends with
 in: in a list
 pr: present
 not: not of a logical expression
 ```
 
-## How to use it 
-Use your dependency manager to import `github.com/nikunjy/rules/parser`. This will let you parse a rule and keep the parsed representation around. 
-Alternatively, you can also use `github.com/nikunjy/rules` directly to call the root `Evaluate(string, map[string]interface{})` method. 
+## How to use it
 
-I would recommend importing `github.com/nikunjy/rules/parser` 
+Use your dependency manager to import `github.com/nikunjy/rules/parser`. This will let you parse a rule and keep the parsed representation around.
+Alternatively, you can also use `github.com/nikunjy/rules` directly to call the root `Evaluate(string, map[string]interface{})` method.
+
+I would recommend importing `github.com/nikunjy/rules/parser`
 
 ## How to extend the grammar
-1. Please look at this [antlr tutorial](https://tomassetti.me/antlr-mega-tutorial/#setup-antlr), the link will show you how to setup antlr. 
-The article has a whole lot of detail about antlr I encourage you to read it, you might also like [my blog post](https://medium.com/@nikunjyadav/generic-rules-engine-in-golang-using-antlr-d30a0d0bb565) about this repo.
-2. After taking a look at the antlr tutorial, you can extend the [JsonQuery.g4 file](https://github.com/nikunjy/rules/blob/master/parser/JsonQuery.g4). 
+
+1. Please look at this [antlr tutorial](https://tomassetti.me/antlr-mega-tutorial/#setup-antlr), the link will show you how to setup antlr.
+   The article has a whole lot of detail about antlr I encourage you to read it, you might also like [my blog post](https://medium.com/@nikunjyadav/generic-rules-engine-in-golang-using-antlr-d30a0d0bb565) about this repo.
+2. After taking a look at the antlr tutorial, you can extend the [JsonQuery.g4 file](https://github.com/nikunjy/rules/blob/master/parser/JsonQuery.g4).
 3. Compile the parser `antlr4 -Dlanguage=Go -visitor -no-listener JsonQuery.g4 -o ./` (Note: `-o` is the output directory, make sure all the stuff it generates is in the `parser` directory of the root repo folder)
 
 [ci-img]: https://api.travis-ci.org/nikunjy/rules.svg?branch=master