README.md in memory_profiler-0.9.14 vs README.md in memory_profiler-1.0.0

@@ -1,15 +1,15 @@
-[![Build Status](https://travis-ci.org/SamSaffron/memory_profiler.svg?branch=master)](https://travis-ci.org/SamSaffron/memory_profiler)
+[![CI](https://github.com/SamSaffron/memory_profiler/workflows/CI/badge.svg)](https://github.com/SamSaffron/memory_profiler/actions?query=workflow%3ACI)
 [![Gem Version](https://badge.fury.io/rb/memory_profiler.svg)](https://rubygems.org/gems/memory_profiler)
 
 # MemoryProfiler
 
 A memory profiler for Ruby
 
 ## Requirements
 
-Ruby(MRI) Version 2.3.8 and above.
+Ruby(MRI) Version 2.5.0 and above.
 
 ## Installation
 
 Add this line to your application's Gemfile:
 
@@ -22,9 +22,28 @@
 Or install it yourself as:
 
     $ gem install memory_profiler
 
 ## Usage
+
+There are two ways to use `memory_profiler`:
+* command line
+* convenience API
+
+### Command Line
+
+The easiest way to use memory_profiler is via the command line, which requires no modifications to your program. The basic usage is:
+```
+$ ruby-memory-profiler [options] <script.rb> [--] [script-options]
+```
+Where `script.rb` is the program you want to profile.
+
+For a full list of options, execute the following command:
+```
+ruby-memory-profiler -h
+```
+
+### Convenience API
 
 ```ruby
 require 'memory_profiler'
 report = MemoryProfiler.report do
   # run your code here