Add docs for strict_attributes mode.

Also make the spec a bit more comprehensive.

lib/inversion/template.rb

@@ -82,6 +82,11 @@
 #   a purposeful delay between reloads for busy servers. Defaults to +0+
 #   (disabled).
 #
+# [:strict_attributes]
+#   Disable getting/setting attributes that aren't explicitly declared with a tag.
+#   Trying to get/set an attribute that isn't declared in the template with this
+#   option enabled will result in a NoMethodError being raised.
+#
 #
 class Inversion::Template
 	extend Loggability

spec/inversion/template_spec.rb

@@ -127,9 +127,12 @@
 
 
 	it "raises instead of generating an accessor if configured with strict attributes" do
-		tmpl = described_class.new( '', strict_attributes: true )
+		tmpl = described_class.new( '<?attr bar ?>', strict_attributes: true )
 		expect { tmpl.foo = :bar }.to raise_error( NoMethodError, "no tag attribute 'foo' (strict mode)" )
 		expect { tmpl.foo }.to raise_error( NoMethodError, "no tag attribute 'foo' (strict mode)")
+
+		tmpl.bar = :foo
+		expect( tmpl.bar ).to eq( :foo )
 	end