Travis CI and Documentation Generation Improvements

* Use docker images from docker hub instead of building them on Travis
* Fix doxygen warnings for Markdown Files
* Modify Travis build matrix to include stages and additional jobs
* Add doxygen2jsdoc submodule
* Add doxyport submodule
* Remove duplicated code in doxy/node directory
* Generate documentation for each language in Travis

Signed-off-by: Nicolas Oliver <dario.n.oliver@intel.com>

.travis.yml

@@ -3,45 +3,6 @@ sudo: required
 
 language: cpp
 
-compiler:
-  - clang
-  - gcc
-
-env:
-  - TARGET=doc
-  - TARGET=python
-  - TARGET=java
-  - TARGET=node4
-  - TARGET=node5
-  - TARGET=node6
-  - TARGET=android
-  - TARGET=sonar-scan
-
-matrix:
-  exclude:
-    - compiler: clang
-      env: TARGET=java
-    - compiler: gcc
-      env: TARGET=android
-    - compiler: clang
-      env: TARGET=sonar-scan
-  include:
-    - compiler: gcc
-      env: GCC_VERSION=6 TARGET=doc
-    - compiler: gcc
-      env: GCC_VERSION=6 TARGET=python
-    - compiler: gcc
-      env: GCC_VERSION=6 TARGET=java
-    - compiler: gcc
-      env: GCC_VERSION=6 TARGET=node4
-    - compiler: gcc
-      env: GCC_VERSION=6 TARGET=node5
-    - compiler: gcc
-      env: GCC_VERSION=6 TARGET=node6
-  allow_failures:
-    - compiler: gcc
-      env: TARGET=sonar-scan
-
 services:
   - docker
 
@@ -51,14 +12,71 @@ before_install:
   - chmod +x docker-compose
   - sudo mv docker-compose /usr/local/bin
 
-before_script:
-  - if [ "$CC" == "gcc" ]; then export CC=gcc-${GCC_VERSION:-5}; fi
-  - if [ "$CXX" == "g++" ]; then export CXX=g++-${GCC_VERSION:-5}; fi
-  - if [ "$CC" == "clang" ]; then export CC=clang-3.8; fi
-  - if [ "$CXX" == "clang++" ]; then export CXX=clang++-3.8; fi
-  - docker-compose build base
-  - if [ "$TARGET" == "android" ]; then docker-compose build java; fi
-  - docker-compose build ${TARGET}
-
-script:
-  - docker-compose run ${TARGET}
+jobs:
+  fast_finish: true
+  allow_failures:
+    - env: TARGET=sonar-scan
+    - env: TARGET=ipk
+  include:
+    - &run-with-clang
+      stage: Clang 3.8
+      env: TARGET=python
+      before_script: docker-compose pull ${TARGET}
+      script:
+        - export CC=clang-3.8 CXX=clang++-3.8
+        - docker-compose run ${TARGET}
+    - <<: *run-with-clang
+      env: TARGET=node4
+    - <<: *run-with-clang
+      env: TARGET=node5
+    - <<: *run-with-clang
+      env: TARGET=node6
+    - <<: *run-with-clang
+      env: TARGET=java
+    - &run-with-gcc-5
+      stage: Gcc 5
+      env: TARGET=python
+      before_script: docker-compose pull ${TARGET}
+      script:
+        - export CC=gcc-5 CXX=g++-5
+        - docker-compose run ${TARGET}
+    - <<: *run-with-gcc-5
+      env: TARGET=node4
+    - <<: *run-with-gcc-5
+      env: TARGET=node5
+    - <<: *run-with-gcc-5
+      env: TARGET=node6
+    - <<: *run-with-gcc-5
+      env: TARGET=java
+    - &run-with-gcc-6
+      stage: Gcc 6
+      env: TARGET=python
+      before_script: docker-compose pull ${TARGET}
+      script:
+        - export CC=gcc-6 CXX=g++-6
+        - docker-compose run ${TARGET}
+    - <<: *run-with-gcc-6
+      env: TARGET=node4
+    - <<: *run-with-gcc-6
+      env: TARGET=node5
+    - <<: *run-with-gcc-6
+      env: TARGET=node6
+    - <<: *run-with-gcc-6
+      env: TARGET=java
+    - &run-additional-jobs
+      stage: Additional Jobs
+      env: TARGET=doc
+      before_script: docker-compose pull ${TARGET}
+      script:
+        - export CC=clang-3.8 CXX=clang++-3.8
+        - docker-compose run ${TARGET}
+    - <<: *run-additional-jobs
+      env: TARGET=android
+    - <<: *run-additional-jobs
+      env: TARGET=sonar-scan
+    - <<: *run-additional-jobs
+      env: TARGET=ipk
+    - <<: *run-additional-jobs
+      env: TARGET=rpm
+    - <<: *run-additional-jobs
+      env: TARGET=npm