prometheus/model/textparse/README.md

# Making changes to textparse lexers
In the rare case that you need to update the textparse lexers, edit promlex.l or openmetricslex.l and then run the following command: 
`golex -o=promlex.l.go promlex.l`

Note that you need golex installed: 
`go get -u modernc.org/golex`
Add a README.md to textparse package about how to update lexers. Signed-off-by: Callum Styan <callumstyan@gmail.com> 5 years ago			`# Making changes to textparse lexers`
			`In the rare case that you need to update the textparse lexers, edit promlex.l or openmetricslex.l and then run the following command:`
			`golex -o=promlex.l.go promlex.l`

			`Note that you need golex installed:`
			`go get -u modernc.org/golex`