Adding FOSSA and Travis info

.fossa.yml

@@ -0,0 +1,9 @@
+# Generated by FOSSA CLI (https://github.com/fossas/fossa-cli)
+# Visit https://fossa.com to learn more
+
+version: 2
+cli:
+  server: https://app.fossa.com
+  fetcher: custom
+  project: git@github.com:uber-research/PPLM.git
+analyze: {}

.travis.yml

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+language: python
+python:
+  - "3.6"
+install:
+  - pip install -r requirements.txt
+script:
+  # your build scripts before running `fossa`
+  # NOTE: before running `fossa` make sure to save your FOSSA_API_KEY in your
+  # environment variable in Travis see below.
+  - fossa init
+  - fossa analyze