move & update host target docs

Change-Id: I8e66a50da8931b204205db2e2ac57d82550f52a4
diff --git a/README.md b/README.md
index e28ccda..c127954 100644
--- a/README.md
+++ b/README.md
@@ -79,16 +79,6 @@
 real device to copy build results and execute them. For Qemu there is a bit of
 [tricky set up](https://fuchsia.googlesource.com/magenta/+/master/docs/qemu.md#Enabling-Networking-under-QEMU-x86_64-only) to do.
 
-Finally, you need to be using nightly (as opposed to stable) and have the `x86_64-unknown-fuchsia`
-target installed. If you installed rust with [rustup](https://www.rustup.rs) you can
-install the target with:
-
-    rustup default nightly
-    rustup target add x86_64-unknown-fuchsia
-
-If you installed Rust some other way, you'll have to do some research about how to get the nightly
-build and `x86_64-unknown-fuchsia` support into your installation.
-
 ### Testing if Fargo is working
 
 Now to verify if fargo is working correctly, try starting a fuchsia machine and executing a test.
@@ -146,6 +136,13 @@
 To change this behavior, set the environmental variables `FARGO_CARGO` and `FARGO_RUSTC` before
 running fargo.
 
+If you need to be using a different version of nightly for some reason, you'll need the `x86_64-fuchsia` target.
+If you installed rust with [rustup](https://www.rustup.rs) you can install the target with:
+
+    rustup default nightly
+    rustup target add x86_64-fuchsia
+
+
 ## Environmental variables set by fargo
 
 CARGO\_TARGET\_[X86\_64|AARCH64]\_UNKNOWN\_FUCHSIA\_RUNNER - set to the fargo binary to run remotely on simulator or device.