Linuxbrew (fix #31)

README.md

@@ -19,7 +19,7 @@ Just run `topgrade`. It will run the following steps:
   * *CentOS/RHEL*: Run `yum upgrade`
   * *Fedora* - Run `dnf upgrade`
   * *Debian/Ubuntu*: Run `apt update && apt dist-upgrade`
-  * *macOS*: Run `brew update && brew upgrade`
+* *Unix*: Run `brew update && brew upgrade`. This should handle both Homebrew and Linuxbrew.
 * Check if the following paths are tracked by Git. If so, pull them:
   * ~/.emacs.d (Should work whether you use [Spacemacs](http://spacemacs.org/) or a custom configuration)
   * ~/.zshrc

src/main.rs

@@ -131,11 +131,9 @@ fn run() -> Result<(), Error> {
         }
     }
 
-    if cfg!(target_os = "macos") {
     if let Some(brew) = utils::which("brew") {
-            terminal.print_separator("Homebrew");
-            run_homebrew(&brew).report("Homebrew", &mut reports);
-        }
+        terminal.print_separator("Brew");
+        run_homebrew(&brew).report("Brew", &mut reports);
     }
 
     git_repos.insert(home_path(".emacs.d"));