Fix template of plugin to not mention theme

packages/gitbook-plugin-hints/.npmignore

@@ -1,2 +1,2 @@
 # Publish assets on NPM
-!_assets
+!_assets/plugin.js

packages/gitbook-plugin/src/create.js

@@ -14,7 +14,7 @@ function create(outputDir, spec) {
         'name': `gitbook-plugin-${spec.name}`,
         'description': `${spec.desc}`,
         'main': 'index.js',
-        'browser': './_assets/theme.js',
+        'browser': './_assets/plugin.js',
         'version': '0.0.0',
         'dependencies': {
             'gitbook-core': '^0.0.0'
@@ -26,7 +26,7 @@ function create(outputDir, spec) {
             'gitbook': '>=3.0.0'
         },
         'scripts': {
-            'build-js': 'gitbook-plugin build ./src/index.js ./_assets/theme.js',
+            'build-js': 'gitbook-plugin build ./src/index.js ./_assets/plugin.js',
             'prepublish': 'npm run build-js'
         },
         'homepage': `${spec.github}`,

packages/gitbook-plugin/template/.gitignore

@@ -28,4 +28,4 @@ node_modules
 *.swp
 
 # Plugin assets
-_assets
+_assets/plugin.js

packages/gitbook-plugin/template/.npmignore

@@ -1,2 +0,0 @@
-# Publish assets on NPM
-!_assets