Merge branch 'remove_temp' into 'master'

Remove temporary files and directories

See merge request !28

src/exec.rs

@@ -127,6 +127,7 @@ fn base(bootloader_bin: &Path, gui: bool, fuse: bool) -> io::Result<PathBuf> {
         }
 
         fs::rename(&base_partial, &base_bin)?;
+        fs::remove_dir_all(&base_dir)?;
     }
     Ok(base_bin)
 }

src/toolchain.rs

@@ -70,6 +70,8 @@ pub fn toolchain() -> io::Result<PathBuf> {
             .status()
             .and_then(status_error)?;
 
+        fs::remove_file(&shasum_file)?;
+        fs::remove_file(&prefix_tar)?;
         fs::rename(&toolchain_partial, &toolchain_dir)?;
     }