Remove autogenerated files

These are generated when running "autoreconf -if", no need to track
them in git.
Add .gitginore: Ignore files that are generated on build

A "git status" after building now comes back clean.
Fix syntax error in encfsctl.pod (misplaced "=pod")

Error was:

	/usr/bin/pod2man --section=1 --release=1.7.5 --center="Encrypted Filesystem" encfsctl.pod encfsctl.1
	encfsctl.pod around line 1: =cut found outside a pod block.  Skipping to next block.
	POD document had syntax errors at /usr/bin/pod2man line 69.
	make[2]: *** [encfsctl.1] Error 255
Add Travis CI config file and build status icon

At the moment, the icon points to rfjakob's Travis account.
This could/should be changed to vgough.
Travis: Run self-tests after compile
Merge pull request #22 from rfjakob/master

Clean up autogenerated files & add automatic Travis CI testing