Change file structures so that the interior modpol folder IS the portable modpol.

Added documentation of how to pre-define the modpath and the storage file.

modpol/DOCS/GOVERNANCE.md

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+One administrator, @ntnsndr, holds ultimate decision-making power over the project. This is a temporary arrangement while we build trust as a community and adopt a more inclusive structure.
+
+* **Autocracy** The administrator holds ultimate decision-making power in the community.
+    * **Executive** The administrator is responsible for implementing—or delegating implementation of—policies and other decisions.
+    * **Lobbying** If participants are not happy with the administrator's leadership, they may voice their concerns or leave the community.
+* **Do-ocracy** Those who step forward to do a given task can decide how it should be done, in ongoing consultation with each other and the administrator.
+    * **Membership** Participation is open to anyone who wants to contribute. The administrator can remove misbehaving participants at will for the sake of the common good.
+* **Code of Conduct** Participants are expected to abide by the Contributor Covenant (contributor-covenant.org).
+
+---
+
+Created by [Nathan Schneider](https://gitlab.com/medlabboulder/modpol)
+
+[![CommunityRule derived](https://communityrule.info/assets/CommunityRule-derived-000000.svg)](https://communityrule.info)   
+[Creative Commons BY-SA](https://creativecommons.org/licenses/by-sa/4.0/)

modpol/DOCS/Predefinitions.txt

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+When calling modpol.lua from another file, one may wish to use 
+different functions than those included by default. 
+
+So far, 2 definitions need to be made BEFORE calling modpol.lua, the rest can be overwritten
+after calling modpol.lua .
+
+setup:
+----------------
+Define the global modpol table:
+modpol = {}
+
+the following 2 items *may* be defined, if they are not, then defaults will be used:
+========================
+--------------------
+modpol.get_script_dir()
+--------------------
+type: function
+
+defaults to: a function that can only work in linux
+
+usage: must return the file path of the modpol directory. If modpol is in a
+larger directory, such as a mod filesystem, make sure that the path returned is the "base" 
+modpol folder, i.e. the folder with all the original modpol files.
+========================
+--------------------
+modpol.storage_file_path
+--------------------
+type: string
+
+defaults to: topdir .. "/storage/storage-local.lua", 
+where topdir is the directory defined by modpol.storage_file_path 
+
+usage: if you wish to use another method of storage than that provided by default, 
+then you can save a filepath to the storage script here. 
+