Update chromium_builder.sh

updated the default version to the latest stable for linux (28.0.1500.45)
Update readme.txt

Modified the link to nux.ro to remove the x86_64 directory (and go up one level) since both i386 and x86_64 arch RPMs are now included in the speech_dispatcher/ directory.
1.  Updated chromium_builder.sh to build i686 arch as well as x86_64 arch

2.  Added RPMs to speech_dispatcher/ for i686 from nuxro repo (dotconf.i686, speech-dispatcher.i686, speech-dispatcher-devel.i686

3.  Added flite.i686 and flite.x86_64 from EPEL to speech_dispatcher/ (requried to install other rpms in speech_dispatcher/)

4.  Added build.log to .gitignore
Modified chrome_libpdf_copy.sh and chrome_pepperflash_copy.sh to work with both i386 and x86_64 arches
Merge branch 'master' of https://github.com/hughesjr/chromium_el_builder
make chromium_rpm_packager.sh work for i386 and x86_64 arches
modified to use gnu make and not ninja for default builds (Required for > version 29.x tree)
Merge pull request #2 from hughesjr/master

Multi-Arch and 29.x tree changes