Add ipaddress to Pipfile for 2.7 support.

Pipfile

@@ -2,11 +2,6 @@
 verify_ssl = true
 url = "https://pypi.python.org/simple"
 
-[dev-packages]
-coveralls = "*"
-faker = "*"
-flake8 = "*"
-
 [packages]
 django = "*"
 djangorestframework = "*"
@@ -14,3 +9,9 @@ django-filter = "*"
 django-widget-tweaks = "*"
 plotly = "*"
 pandas = "*"
+
+[dev-packages]
+coveralls = "*"
+faker = "*"
+flake8 = "*"
+ipaddress = "*"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "de9e2ccb120ed37e0adc3bd4f7054692647908b13127feb81f888290d060c1c8"
+            "sha256": "6320081dc17e4c796cda43fc5a5bef12a154917fc572a75a5444e78454385e12"
         },
         "requires": {},
         "sources": [
@@ -101,6 +101,9 @@
         "idna": {
             "version": "==2.6"
         },
+        "ipaddress": {
+            "version": "==1.0.18"
+        },
         "mccabe": {
             "version": "==0.6.1"
         },