adding Lasso language and sample files
Lasso extentions sorted
Lasso lexer name added
Add more samples with listed extensions.  Remove extension specification.  Clarify comments at top of languages.yml.
Forcing travis check
Merge remote branch 'upstream/master' into lasso

Conflicts:
	lib/linguist/languages.yml
force travis update
Merge remote branch 'upstream/master' into lasso
Force Travis run
Forcing another Travis build, now that GitHub's pygments.rb is at v 0.3.5. See https://github.com/github/linguist/pull/325#issuecomment-11802593
One more try to pass Travis build. Crossing fingers...
Merge remote branch 'upstream/master' into lasso
add Ecl to lib/linguist/languages.yml
add extensions for Lasso in lib/linguist/languages.yml
sorted extensions for Lasso in lib/linguist/languages.yml
Merge branch 'lasso'