add in notes about pip

docs/topics/install-zamboni/installation.rst

@@ -145,7 +145,7 @@ Finish the install
 
 From inside your activated virtualenv, run::
 
-    pip install -r requirements/compiled.txt
+    pip install -r requirements/dev.txt -r requirements/compiled.txt
 
 pip installs a few packages into our new virtualenv that we can't distribute in
 ``zamboni-lib``.  These require a C compiler.

docs/topics/install-zamboni/packages.rst

@@ -32,6 +32,8 @@ You can get a development environment with ::
 Using the vendor library
 ------------------------
 
+**Note**: this is deprecated, all packages should be added in requirements.
+
 The other method is to use the /vendor library of all packages and
 repositories.  These are maintained by Hudson in the zamboni-lib repository.
 
@@ -49,6 +51,8 @@ or from ::
 Adding new packages
 -------------------
 
+**Note**: this is deprecated, all packages should be added in requirements.
+
 The vendor repo was seeded with ::
 
     pip install --no-install --build=vendor/packages --src=vendor/src -I -r requirements/dev.txt
@@ -78,6 +82,9 @@ hit any snags like that.
 
 Adding submodules
 ~~~~~~~~~~~~~~~~~
+
+**Note**: this is deprecated, all packages should be added in requirements.
+
 ::
 
     for f in src/*