Merge pull request #322 from pavel-pimenov/master

Fix copy-paste for MONGOOSE_HEXDUMP feature
Styling changes for hexdump
doc typos

just saw them while reading...
Merge pull request #324 from eichin/patch-1

doc typos
URL corrected
More comments in example
Typo fixed
Formatted example
Formatted example
Typo fixed
fix compilation under FreeBSD
Merge pull request #329 from abimaelmartell/fix/freebsd-compilation

fix compilation under FreeBSD