Merge pull request #91 from stellar/sanity

add "peers_reserve_out" as a .cfg option
Merge pull request #92 from stellar/sanity

stray header
Merge pull request #93 from stellar/sanity

left off file
fix for linux
linux
Attempt to revive travis build
Remove failing line from testcase; sfMessageKey field was removed in 050bdcc89393d8563d8110561c4f485e1ce4b0fc
Trigger first travis build
Add secure slack notification to travis.
checking in the benign parts of a big refactor