[DOC] better doc

doc/build.md

@@ -0,0 +1,72 @@
+Build lib & build sample                           {#esignal_build}
+========================
+
+@tableofcontents
+
+Download:                                          {#esignal_build_download}
+=========
+
+esignal use some tools to manage source and build it:
+
+lutin (build-system):                              {#esignal_build_download_lutin}
+---------------------
+
+```{.sh}
+	pip install lutin --user
+	# optionnal dependency of lutin (manage image changing size for application release
+	pip install pillow --user
+```
+
+
+dependency:                                        {#esignal_build_download_dependency}
+-----------
+
+```{.sh}
+	mkdir framework
+	cd framework
+	git clone https://github.com/atria-soft/elog.git
+	git clone https://github.com/atria-soft/etk.git
+	git clone https://github.com/atria-soft/ememory.git
+	cd ..
+```
+
+sources:                                           {#esignal_build_download_sources}
+--------
+
+```{.sh}
+	cd framework
+	git clone https://github.com/atria-soft/esignal.git
+	cd ..
+```
+
+Build:                                             {#esignal_build_build}
+======
+
+
+library:                                           {#esignal_build_build_library}
+--------
+
+```{.sh}
+	lutin -mdebug esignal
+```
+
+Sample:                                            {#esignal_build_build_sample}
+-------
+
+```{.sh}
+	lutin -mdebug esignal-sample
+	lutin -mdebug esignal-test
+```
+
+Or simple:
+
+```{.sh}
+	lutin -mdebug esignal-*
+```
+
+Run sample:                                        {#esignal_build_run_sample}
+===========
+
+```{.sh}
+	lutin -mdebug esignal-sample?run
+```

doc/mainpage.md

@@ -43,3 +43,12 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 
+
+Other pages                              {#eproperty_mainpage_sub_page}
+===========
+
+  - @ref esignal_build
+  - @ref esignal_tutorial
+  - [**ewol coding style**](http://atria-soft.github.io/ewol/ewol_coding_style.html)
+
+