Add my solution

TravisCI.md

@@ -46,4 +46,35 @@ script:
 
 matrix:
   fast_finish: true
+```
+
+***
+
+contributor @Lin-Buo-Ren says:
+
+> Here's a Git submodule and configuration that support build and install ShellCheck without root access
+> http://github.com/Lin-Buo-Ren/Utilities-for-Travis-CI
+> Also a cache is preserved to decrease subsequent build time
+
+```yaml
+---
+language: bash
+sudo: false
+addons:
+  apt:
+    packages: 
+    - realpath # required by script
+    - cabal-install
+    - ghc
+
+install:
+- ./"Build and Setup ShellCheck's Latest Release.bash" --without-root
+- PATH="${HOME}/.cabal/bin:${PATH}"
+
+before_cache:
+- rm $HOME/.cabal/logs/build.log
+
+cache:
+  directories:
+  - $HOME/.cabal
 ```