kebab-case snake_case executable, fix #9

.gitignore

@@ -0,0 +1,2 @@
+__pycache__
+*.egg-info

qurator/sbb_textline_detector/ocrd-tool.json

@@ -1,8 +1,8 @@
 {
   "version": "0.0.1",
   "tools": {
-    "ocrd_sbb_textline_detector": {
+    "ocrd-sbb-textline-detector": {
-      "executable": "ocrd_sbb_textline_detector",
+      "executable": "ocrd-sbb-textline-detector",
       "description": "Detect lines",
       "steps": ["layout/segmentation/line"],
       "input_file_grp": [

setup.py

@@ -24,7 +24,7 @@ setup(
     entry_points={
       'console_scripts': [
         "sbb_textline_detector=qurator.sbb_textline_detector:main",
-        "ocrd_sbb_textline_detector=qurator.sbb_textline_detector:ocrd_sbb_textline_detector",
+        "ocrd-sbb-textline-detector=qurator.sbb_textline_detector:ocrd_sbb_textline_detector",
       ]
     },
     python_requires='>=3.6.0',