make docs more readable

README.md

@@ -35,6 +35,39 @@ wget -nv https://bit.ly/node-installer -O - ./node-installer.sh; bash ./node-ins
 
 ### Choosing a specific version
 
+**Latest**
+
+```bash
+export NODEJS_VER=""
+```
+
+**Exact**
+
+```bash
+export NODEJS_VER="v10.2.1"
+```
+
+**Latest of vX.Y.Z**
+
+```bash
+export NODEJS_VER="v8.1"
+```
+
+**Latest of vX.YY.Z**
+
+```bash
+# latest of v8.11.x
+export NODEJS_VER="v8.11"
+```
+
+**Latest of vX.Y**
+
+```bash
+export NODEJS_VER="v10"
+```
+
+Fun FYI, here's how the latest version is determined:
+
 ```bash
 NODEJS_VER=$(curl -fsSL https://nodejs.org/dist/index.tab | tail -n +2 | cut -f 1 | head -1 )
 echo "The current node.js version is $NODEJS_VER"
@@ -46,25 +79,6 @@ NODEJS_VER=$(curl -fsSL https://nodejs.org/dist/index.tab | tail -n +2 | cut -f
 echo "Latest node.js $BASE_VER is $NODEJS_VER"
 ```
 
-To install the latest of a specific version rather than defaulting to latest
-
-```bash
-### latest version
-export NODEJS_VER=""
-
-# exact version
-export NODEJS_VER="v10.2.1"
-
-# latest of v8.1.x
-export NODEJS_VER="v8.1"
-
-# latest of v8.11.x
-export NODEJS_VER="v8.11"
-
-# latest of v10.x
-export NODEJS_VER="v10"
-```
-
 ### Choosing an install location
 
 Just set BOTH `NODE_PATH` and `NPM_CONFIG_PREFIX`.
@@ -74,10 +88,15 @@ The install path will be the preceding `lib/node_modules`
 ```bash
 export NPM_CONFIG_PREFIX=/tmp/user/local
 export NODE_PATH=/tmp/user/local/lib/node_modules
+```
 
+```bash
 curl -fsSL https://bit.ly/node-installer -o ./node-installer.sh; bash ./node-installer.sh --dev-deps
+```
 
-# If you want to add the install location to your PATH
+If you want to add the install location to your `PATH`:
+
+```bash
 PATH=$PATH:/tmp/user/local/bin
 ```