Added developer manual and instructions for documentation.

Refs #3 and idaholab#156.

doc/config.yml

@@ -25,6 +25,7 @@ Renderer:
             Theory: manuals/theory/index.md
             Software Quality: sqa/index.md
             User: manuals/user/index.md
+            Developer: manuals/developer/index.md
         Documentation:
             Syntax: syntax/index.md
         Help:

doc/content/manuals/developer/index.md

@@ -0,0 +1,3 @@
+# Developer Manual
+
+!include include/developer/documentation.md

doc/content/manuals/include/developer/documentation.md

@@ -0,0 +1,58 @@
+## Instructions for documentation
+
+Prior to merging the code, MOOSE and MASTODON require adequate documentation
+describing the implemented feature, such as materials, post processors, etc.
+Several tools are available for MOOSE-based documentation, and these tools are
+described [here](utilities/MooseDocs/index.md).
+For each new feature, the following documentation files are required.
+
+#### Documentation of C++ objects
+
+For each C++ object created, the developer should include the documentation as
+prescribed by [MOOSE requirements](utilities/MooseDocs/generate.md).
+
+#### User manual
+
+For each feature (such as material, boundary condition, etc., which may include
+one of more C++ objects), the developer must create one documentation file that
+describes the method of usage of this feature. This file must be named as
+`<feature_name>-user.md` and be placed in the appropriate sub folder in  
+`content/manuals/include`. A rough template for the user manual document is
+below.
+
+```
+# <Name of the feature, e.g., lead-rubber isolator>
+
+Introduction and link to the corresponding theory manual document.
+
+Objects needed to simulate this feature. Links to the documentation of these
+objects.
+
+Associated actions, and usage in the Mastodon block, if available. Link to the
+documentation of the corresponding Mastodon block action.
+
+Quick demo of this feature including listings of input files and sample results.
+
+```
+
+#### Theory manual
+
+For each feature (such as material, boundary condition, etc., which may include
+one of more C++ objects), the developer must create one documentation file that
+describes the theory behind this feature. This file must be named as
+`<feature_name>-theory.md` and be placed in the appropriate sub folder in  
+`content/manuals/include`. A rough template for the theory manual document is
+below.
+
+```
+# <Name of the feature, e.g., lead-rubber isolator>
+
+Introduction about what the feature does and a link to the corresponding user
+manual document.
+
+Description of the physics, or the theory behind the feature including
+references, equations, figures, etc.
+
+Limitations, if any, of the implementation of this feature in MASTODON.
+
+```