Directly import greeter_summary (tensorflow#25)

Fixes tensorflow#20. Pin pylint to 1.8.1. Make linter cd into bazel-tensorboard-plugin-example.

.travis.yml

@@ -44,7 +44,7 @@ before_install:
         ;;
     esac
 
-  - pip install pylint
+  - pip install pylint==1.8.1
   - pip install futures==3.1.1
   - pip install grpcio==1.4.0
 
@@ -81,10 +81,10 @@ script:
   #     --local_resources=400,2,1.0
 
   - |
-    # DIR=$(pwd)
-    # cd bazel-genfiles
-    # find "${NAME}" -name \*.py -exec cp {} "${DIR}"/{} \;
-    # cd "${DIR}"
+    DIR=$(pwd)
+    cd bazel-tensorboard-plugin-example
+    find "${NAME}" -name \*.py -exec cp {} "${DIR}"/{} \;
+    cd "${DIR}"
     pylint "${NAME}"
 
 before_cache:

greeter_plugin/greeter_demo.py

@@ -22,7 +22,8 @@
 
 import tensorflow as tf
 
-from greeter_plugin import greeter_summary
+# TODO(chihuahua): Figure out why pylint invalidates this import.
+import greeter_summary  # pylint: disable=import-error
 
 # Directory into which to write tensorboard data.
 LOGDIR = '/tmp/greeter_demo'