docs: add note about svg-term-cli

Author: marionebl

README.md

@@ -1,9 +1,13 @@
 > Lint commit messages
 
 <p align="center">
-  <img width="750" src="https://marionebl.github.io/commitlint/assets/commitlint.svg">
+  <img width="600" src="https://cdn.rawgit.com/marionebl/commitlint/3594397919c6188ce31ccfc94a0113d625d55516/docs/assets/commitlint.svg">
 </p>
 
+> Demo generated with [svg-term-cli](https://github.com/marionebl/svg-term-cli) 
+>
+> `cat docs/assets/commitlint.json | svg-term --out docs/assets/commitlint.svg --frame --profile=Seti --height=20 --width=80`
+
 # commitlint [![slack][11]][12]
 
 [![npm latest][2]][3] [![Travis branch][4]][5] [![AppVeyor branch][6]][7]

docs/README.md

@@ -1,9 +1,11 @@
 > Lint commit messages
 
 <div class="sequence">
-    <img src="./assets/commitlint.svg"/>
+    <img src="https://cdn.rawgit.com/marionebl/commitlint/3594397919c6188ce31ccfc94a0113d625d55516/docs/assets/commitlint.svg"/>
 </div>
 
+> Demo generated with [svg-term-cli](https://github.com/marionebl/svg-term-cli) 
+
 # commitlint &nbsp; [![slack][11]][12]
 
 [![npm latest][2]][3] [![Travis branch][4]][5] [![AppVeyor branch][6]][7]