Initial release of github2mr.

This is the initial release which is fully-functional and works
for myself, self-hosted github enterprise installations, and
privately hosted gitbucket installs.

It has not been tested against other systems (gogs, gitea, etc),
but reports of success/failure or patches would be most welcome.

.github/build

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+# The basename of our binary
+BASE="github2mr"
+
+# Setup an output directory - creating if missing
+cur=$(pwd)
+OUTPUT="${cur}/bin"
+if [ ! -d "${OUTPUT}" ]; then
+    mkdir -p "${OUTPUT}"
+fi
+
+# We build on multiple platforms/archs
+BUILD_PLATFORMS="linux darwin freebsd"
+BUILD_ARCHS="amd64 386"
+
+# For each platform.
+for OS in ${BUILD_PLATFORMS[@]}; do
+
+    # For each arch
+    for ARCH in ${BUILD_ARCHS[@]}; do
+
+        # Setup a suffix for the binary
+        SUFFIX="${OS}"
+
+        # i386 is better than 386
+        if [ "$ARCH" = "386" ]; then
+            SUFFIX="${SUFFIX}-i386"
+        else
+            SUFFIX="${SUFFIX}-${ARCH}"
+        fi
+
+        echo "Building for ${OS} [${ARCH}] -> ${BASE}-${SUFFIX}"
+
+        # Run the build
+        export GOARCH=${ARCH}
+        export GOOS=${OS}
+        export CGO_ENABLED=0
+
+        # Build the main-binary
+        go build -ldflags "-X main.version=$(git describe --tags 2>/dev/null || echo 'master')" -o "${OUTPUT}/${BASE}-${SUFFIX}"
+    done
+done