[DOC] Start riting tutorials and basic documentation.

doc/faq.bb

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+=?= FAQ =?=
+
+== What is ewol licence ==
+
+This is really simple : APACHE-2 :
+
+Copyright ewol Edouard DUPIN
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	[[http://www.apache.org/licenses/LICENSE-2.0]]
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+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.
+
+
+
+
+== Why we use "DECLARE_FACTORY" Macro ? ==
+
+For some reason!!! But everything might be clear:
+:** In ewol we masively use std::shared_ptr<xxx> (I have create my own but it is not "standard" (I like when we use genecic system)).
+:** The main class : [class[ewol::Object]] herited from [i]std::enable_shared_from_this<Object>[/i] to permit to access at his own [i]std::shared_ptr[/i].
+:** Acces At his own [i]std::shared_ptr[/i] is not allowed in the class contructor/destructor.
+:** Many time for meta-widget we need to propagate our [i]std::shared_ptr[/i] in child.
+
+Then for all these reasons, I have create a simple MACRO that create a static template funtion that create the object and just after 
+creation call the init(...) function to permit to create a complex widget or others with some writing convinience.
+
+
+