Update: README with executable permission text for binaries

Author: LKedward

.github/workflows/CI.yml

@@ -142,10 +142,6 @@ jobs:
         ${{ matrix.BOOTSTRAP_RELEASE_CMD }}
         ${{ matrix.HASH_CMD }}
     
-    - name: Make executable
-      if: github.event_name == 'release' && (contains(matrix.os, 'ubuntu') || contains(matrix.os, 'macos'))
-      run: chmod u+x fpm/fpm-v*
-         
     - name: Upload assets
       if: github.event_name == 'release'
       uses: svenstaro/upload-release-action@v2

README.md

@@ -20,6 +20,10 @@ To report a bug report or suggest a feature, please read our
 ### Binary download
 `x86-64` binaries are available [to download](https://github.com/fortran-lang/fpm/releases) for Windows, MacOS and Linux.
 
+__Note:__ On Linux and MacOS, you will need to enable executable permission before you can use the binary.
+
+_e.g._ `$ chmod u+x fpm-v0.1.0-linux-x86_64`
+
 ### Build from source
 
 #### Install Haskell