Merge pull request #86 from natj/master

changed deprecated min & max to minimum & maximum
avoid building very long paths in renderer. fixes #89
4x speedup of imagesc
README: add basic Windows install info

Fixes #84
Merge pull request #91 from ihnorton/patch-1

README: add basic Windows install info
rename linetype,symboltype to linekind,symboltype
examples: whitespace tweaks
auto-generate doc/examples.md
merged upstream master to local master