documentation update

Author: ddmitov

.gitignore

@@ -1,6 +1,7 @@
 archive/
 build-peb-*/
 resources/app/perl
+squashfs-root
 src/tmp
 
 .qmake.stash
@@ -11,6 +12,7 @@ peb.pro.*
 peb
 peb.exe
 *.AppImage
+*.zip
 
 backup
 upgit

README.md

@@ -54,17 +54,17 @@ in the documentation of this project are to be interpreted as described in [RFC
 
   64-bit Linux:
   ```bash
-  peb-demo-xx.AppImage --appimage-extract
+  ./peb-demo-*.AppImage --appimage-extract
   ```
 
-  Windows:
+  Windows:  
   Unzip using any Windows unzip utility.
 
 * **3.** Optionally install any CPAN modules you may need:
 
-  64-bit Linux - from the extracted ``peb-demo`` directory:
+  64-bit Linux:
   ```bash
-  cd resources/app/perl/bin
+  cd squashfs-root/resources/app/perl/bin
   ./perl ./cpanm YourModule
   ```
 
@@ -87,14 +87,17 @@ in the documentation of this project are to be interpreted as described in [RFC
   Start local Perl scripts by [clicking a link or submitting a form to a special URL](./doc/SETTINGS.md#perl-scripts-api).  
   [Select files or folders with their full paths by clicking a link to a special URL](./doc/SETTINGS.md#selecting-files-and-folders).
 
-* **6.** Optionally pack your application:
+* **6.** Optionally change the [PEB AppImage configuration files](./doc/APPIMAGE.md#peb-appimage-configuration-files).
+
+* **7.** Optionally pack your application:
 
-  64-bit Linux - from the extracted ``peb-demo`` directory:
+  64-bit Linux - from the extracted ``squashfs-root`` directory:
   ```bash
-  ./appimager.sh
+  export VERSION="X.X.X" && ./appimager.sh
   ```
+  The resulting AppImage will be produced in the ``squashfs-root`` directory.  
 
-  Windows:
+  Windows:  
   Zip your PEB-based application using any Windows zip utility.
 
 ## Design Objectives

resources/app/perl-scripts/open-directory.pl

@@ -21,8 +21,8 @@
 my $directory_name = <STDIN>;
 chomp $directory_name;
 
-my $files;
-my $subdirectories;
+my $files = 0;
+my $subdirectories = 0;
 
 traverse ($directory_name);