Add coverage tracking via codecov.io

Conflicts:
	.travis.yml

bin/ci/ubuntu/install-dependencies.sh

@@ -0,0 +1,25 @@
+#!/bin/bash -u
+# Exit if anything fails.
+set -e
+# Override gcc version to $GCC_VER.
+# Put an appropriate symlink at the front of the path.
+mkdir -v $HOME/bin
+for g in gcc g++ gcov gcc-ar gcc-nm gcc-ranlib
+do
+  test -x $( type -p ${g}-$GCC_VER )
+  ln -sv $(type -p ${g}-$GCC_VER) $HOME/bin/${g}
+done
+export PATH=$PWD/bin:$PATH
+
+# What versions are we ACTUALLY running?
+g++ -v
+clang -v
+# Avoid `spurious errors` caused by ~/.npm permission issues
+# Does it already exist? Who owns? What permissions?
+ls -lah ~/.npm || mkdir ~/.npm
+# Make sure we own it
+chown -Rc $USER ~/.npm
+# We use this so we can filter the subtrees from our coverage report
+pip install --user https://github.com/sublimator/codecov-python/zipball/source-match
+
+bash bin/sh/install-boost.sh