Merge pull request #297 from hoijui/patch-1

README: Adds link explaining what BDD means

README.md

@@ -1,6 +1,6 @@
 # ShellSpec: full-featured BDD unit testing framework
 
-ShellSpec is a **full-featured BDD unit testing framework** for dash, bash, ksh, zsh and **all POSIX shells** that provides first-class features such as code coverage, mocking, parameterized test, parallel execution and more. It was developed as a dev/test tool for **cross-platform shell scripts and shell script libraries**. ShellSpec is a new modern testing framework released in 2019, but it's already stable enough. With lots of practical CLI features and simple yet powerful syntax, it provides you with a fun shell script test environment.
+ShellSpec is a **full-featured [BDD](https://en.wikipedia.org/wiki/Behavior-driven_development) unit testing framework** for dash, bash, ksh, zsh and **all POSIX shells** that provides first-class features such as code coverage, mocking, parameterized test, parallel execution and more. It was developed as a dev/test tool for **cross-platform shell scripts and shell script libraries**. ShellSpec is a new modern testing framework released in 2019, but it's already stable enough. With lots of practical CLI features and simple yet powerful syntax, it provides you with a fun shell script test environment.
 
 [![Ubuntu](https://img.shields.io/github/actions/workflow/status/shellspec/shellspec/ubuntu-jammy.yml?label=Ubuntu&style=flat-square)](https://github.com/shellspec/shellspec/actions/workflows/ubuntu-jammy.yml)
 [![macOS](https://img.shields.io/github/actions/workflow/status/shellspec/shellspec/macos-sonoma.yml?label=macOS&style=flat-square)](https://github.com/shellspec/shellspec/actions/workflows/macos-sonoma.yml)