Added binutils to the required packages
Merge pull request #124 from scaratec/master

Added binutils to the required packages
.gitignore: Match items in / only
Add raspbian-ua-netinst-*.bz2 to gitignore in preparation of #135.

The previous commit closed #131.
README.md: Various changes

This closes PR #136.
buildroot.sh: Indentation
buildroot.sh: Indentation
Don't abort when the .img.xz image failes, but give a warning instead.

The build runs fine on Raspberry Pi, but `xz` needs more memory than Pi provides.
Also keep the generated .img file needed later.
buildroot.sh: Build .img.bz2 as well

OS X users don't have `xz` installed by default, but it comes with `bzip2`.

The previous commit also helps with this scenario.
Don't abort when the .img.xz image generation fails, but give a warning instead.

The build runs fine on Raspberry Pi, but `xz` needs more memory than Pi provides.
Also keep the generated .img file needed later.
buildroot.sh: Build .img.bz2 as well

OS X users don't have `xz` installed by default, but it comes with `bzip2`.

The previous commit also helps with this scenario.
Added documentation for writing the image to SD card on a Mac.
Changed '.bz2' to '.img.bz2' since it's more correct and in line with the 'xz' description.
Replaced implicit link with an explicit markdown link.
Merge branch 'v1.0.x'
Added a note wrt exFAT vs FAT32 since it causes the installer to fail.

Funny thing is that this only seems to happen on ppl using windows.
Added a note about the warning messages during installation.
Changed the formatting of the previous notes from italic to bold.
Improved the documentation for specifying the bootsize and rootsize parameters.

This fixes issue #144
Created the CONTRIBUTING document.

This should close #84.