Add master doc

Author: kngwyu

.travis.yml

@@ -37,3 +37,6 @@ install:
 
 script:
   - ./ci/travis/test.sh
+
+after_success:
+  - ./ci/travis/deploy.sh

ci/travis/deploy.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+if [["$TRAVIS_PULL_REQUEST" = "false" && "$TRAVIS_BRANCH" == "master" && \
+         "$TRAVIS_RUST_VERSION" == "nightly" ]]; then
+    cargo doc --all-features --no-deps &&
+    echo "<meta http-equiv=refresh content=0;url=os_balloon/index.html>" > target/doc/index.html &&
+    git clone https://github.com/davisp/ghp-import.git &&
+    ./ghp-import/ghp_import.py -n \
+                               -p \
+                               -f \
+                               -m "Documentation upload" \
+                               -r https://"$GH_TOKEN"@github.com/"$TRAVIS_REPO_SLUG.git" \
+                               target/doc &&
+    echo "Uploaded documentation"
+fi