[GAIAPLAT-1521] Add direct_access example README.md (#1005)

- Add direct_access example README.md
- Minor fixes to the incubator README.md

Author: simone-gaia

production/examples/direct_access/README.md

@@ -0,0 +1,28 @@
+# Direct Access Demo
+A demo of the Gaia Direct Access API.
+
+## Build Instructions
+These instructions assume you have installed the SDK and have installed the `clang` and `cmake` tools.  See the SDK User's Guide for instructions on how to do this.
+
+1. To preserve the initial state of the sample code, copy the source files to a new directory.
+    ```shell
+    mkdir direct_access
+    cd direct_access
+    cp -r /opt/gaia/examples/direct_access/* .
+    ```
+2. Create the build directory under the current `direct_access/` directory and initiate the build.
+    ```shell
+    mkdir build
+    cd build/
+    cmake ..
+    make
+    ```
+3. The output of the build is the 'incubator' executable.
+
+# Running the Demo
+
+To run the `hospital` binary from the build directory use the following command:
+
+```shell
+./hospital
+```

production/examples/incubator/README.md

@@ -4,20 +4,20 @@ A demo of a rule-based system for controlling the temperature of two incubators.
 ## Build Instructions
 These instructions assume you have installed the SDK and have installed the *clang* and *cmake* tools.  See the SDK User's Guide for instructions on how to do this.
 
-1. We suggest copying the sources to a new directory so that you always have a backup in the installed folder if you want to go back.
-```
-mkdir incubator
-cd incubator
-cp -r /opt/gaia/examples/incubator/* .
-```
-2. Create a build directory (in this case it is under the current *incubator/* folder and build.
-```
-mkdir build
-cd build/
-cmake ..
-make
-```
-3. If everything runs successfully the *incubator* executable will be built.
+1. To preserve the initial state of the sample code, copy the source files to a new directory.
+    ```shell
+    mkdir incubator
+    cd incubator
+    cp -r /opt/gaia/examples/incubator/* .
+    ```
+2. Create the build directory under the current `incubator/` directory and initiate the build.
+    ```shell
+    mkdir build
+    cd build/
+    cmake ..
+    make
+    ```
+3. The output of the build is the 'incubator' executable.
 
 # Running the Demo
 The demo operates in two modes:  a show mode and a sim mode.