Move sections from README to docs

docs/source/basic_setup.md

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+### [Go Back](./index.md#directory)
+
+This page shows the basic setup for using OpenRAM.
+
+# Basic Setup
+
+## Dependencies
+
+Please see the Dockerfile for the required versions of tools.
+
+In general, the OpenRAM compiler has very few dependencies:
++ Docker
++ Make
++ Python 3.6 or higher
++ Various Python packages (pip install -r requirements.txt)
++ [Git]
+
+## Docker
+
+We have a [docker setup](./docker) to run OpenRAM. To use this, you should run:
+```
+cd OpenRAM/docker
+make build
+```
+This must be run once and will take a while to build all the tools.
+
+
+## Environment
+
+You must set two environment variables:
++ OPENRAM\_HOME should point to the compiler source directory.
++ OPENERAM\_TECH should point to one or more root technology directories (colon separated).
+
+You should also add OPENRAM\_HOME to your PYTHONPATH.
+
+For example add this to your .bashrc:
+
+```
+  export OPENRAM_HOME="$HOME/OpenRAM/compiler"
+  export OPENRAM_TECH="$HOME/OpenRAM/technology"
+```
+
+You should also add OPENRAM\_HOME to your PYTHONPATH:
+```
+  export PYTHONPATH=$OPENRAM_HOME
+```
+
+Note that if you want symbols to resolve in your editor, you may also want to add the specific technology
+directory that you use and any custom technology modules as well. For example:
+```
+  export PYTHONPATH="$OPENRAM_HOME:$OPENRAM_TECH/sky130:$OPENRAM_TECH/sky130/custom"
+```
+
+We include the tech files necessary for [SCMOS] SCN4M_SUBM,
+[FreePDK45]. The [SCMOS] spice models, however, are
+generic and should be replaced with foundry models. You may get the
+entire [FreePDK45 PDK here][FreePDK45].
+
+
+### Sky130 Setup
+
+To install [Sky130], you must have the open_pdks files installed in $PDK_ROOT. 
+To install this automatically, you can run:
+
+```
+cd $HOME/OpenRAM
+make pdk
+```
+
+Then you must also install the [Sky130] SRAM build space and the appropriate cell views
+by running:
+
+```
+cd $HOME/OpenRAM
+make install
+```