Temporarily unsilent appveyor build.

appveyor.yml

@@ -18,7 +18,7 @@ before_build:
   - set PATH=%PATH%;%cd%
 
   - cppan # dummy run to create %USERPROFILE%\.cppan\cppan.yml
-  - ps: 'Add-Content $env:USERPROFILE\.cppan\cppan.yml "`n`nbuild_system_verbose: false`n"'
+  #- ps: 'Add-Content $env:USERPROFILE\.cppan\cppan.yml "`n`nbuild_system_verbose: false`n"'
 
 build_script:
   - cppan

cppan.yml

@@ -129,6 +129,8 @@ options:
 
 dependencies:
     private:
+        # tesseract uses leptonica only internally
+        # and does not expose its interface to users
         pvt.cppan.demo.leptonica: master
         # only for training tools, move to them later
         pvt.cppan.demo.unicode.icu.i18n: "*"