Implemented password protection for a zip file.
Password given as parameter in the open-method and used in the addFile
internal method.
Tests successful with an existing file, a character array and a string
adding to a zip file.
Copied a constant DEFINE in the minizip src from the zip.c in the zip.h
file so it can used in our Zip.cpp
Moved the constant DEFINE from the minizip src in the zip.h to the Zip.h
file, so the minizip src remain unchanged.
Merge branch 'zipfileswithpassword' of https://github.com/flo2k/CppZip into zipfileswithpassword
Create README.md
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Merged with Master to get all the work of the last week
Merge branch 'master' into zipfileswithpassword

Conflicts:
	README.md
	src/CppZip/Unzip.cpp
	src/CppZip/Zip.cpp
	src/CppZip/Zip.h
	src/CppZipTest/ZipTest.cpp
	src/CppZipTest/ZipTest.h
Added the reading of password protected zip files to Unzip.
Improved the password handling by adding a method formatPassword to Zip
and Unzip.
Tests have to be implemented. The current tests run succesful with the
change.
Started Tests for Password-protected zipfiles
Uncrypting in minizip/unzip.c eingeschaltet. Jetzt auslesen
passwortgeschützter Dateien möglich
The tests for password-protected files now check also the content of the
files.
Added test for unzip passwordProtected.zip -> Unzip doesn't pass the
test on my computer (linux mint 14 mate: 64 bit). It seems, that there
is an issue with minizip and 64 bit.
Stabilize the test_openAppendToZipWithFileAlreadyExisting() with set the
file permissions to readOnly before the test begins!
UnzipTest::test_getFileContentFromPasswordProtectedZipFile() now
correctly unzips with password protected zip. But only if the zipfile
was created with minizip.
Merge branch 'master' into zipfileswithpassword