npm version syntax

I have a hard time remembering what the semver syntax for npm packages is, so these things help me remember.

Version syntax

Syntax	Description
`1.1.12`	Pinned to exact version
`~1.1.12` or `1.1.x`	Patch versions from 1.1.12 and higher
`1.1.x`	Patch versions from 1.1.0 and higher
`^1.1.12`	Minor and patch versions from 1.1.12 and higher
`1.x`	Minor and patch versions from 1.0 and higher
`x`	All versions