correct the direction of the copyright-string null test in bitmap save
Merge pull request #1143 from mskala/inverted_copyright_test

correct the direction of the copyright-string null test in bitmap save
Close #1145
Update README.md
Update gitignore for tango icon folder
Merge branch '201401-house-cleaning' of github.com:abelcheung/fontforge into 201401-house-cleaning