Use Pipfile instead of requirements.txt

Pipfile

@@ -0,0 +1,13 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+"fs.dropboxfs" = {git = "https://github.com/rkhwaja/fs.dropboxfs.git"}
+"discord.py" = {ref = "rewrite", git = "https://github.com/Rapptz/discord.py"}
+
+[dev-packages]
+
+[requires]
+python_version = "3.7"

Pipfile.lock

@@ -0,0 +1,29 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "0b00547c8080ca98592603203321ca0aa4c3be1d1d1d0d69ac0fb28b78619350"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.7"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "discord.py": {
+            "git": "https://github.com/Rapptz/discord.py",
+            "ref": "00a659c6526b2445162b52eaf970adbd22c6d35d"
+        },
+        "fs.dropboxfs": {
+            "git": "https://github.com/rkhwaja/fs.dropboxfs.git",
+            "ref": "68988a25143a8ea760bc6dfb2a715f6f98ac31c7"
+        }
+    },
+    "develop": {}
+}

requirements.txt

@@ -1,13 +0,0 @@
-aiohttp==3.3.2
-async-timeout==3.0.0
-attrs==18.1.0
-cffi==1.11.5
-chardet==3.0.4
-git+https://github.com/Rapptz/discord.py@rewrite#egg=discord.py
-idna==2.7
-multidict==4.3.1
-pycparser==2.18
-six==1.11.0
-websockets==6.0
-yarl==1.2.6
-fs