Update documentation files

And add license templates

Author: EXL

ReadMe.md

@@ -1,10 +1,10 @@
 Code Polyglot
 =============
 
-![Code Polyglot Techno Screenshot](image/CodePolyglot_TechnoSkin_Nokia_Screenshot.png)
-
 Code snippets sharing service powered by [GraalVM](https://www.graalvm.org/) and [Spring Boot](https://spring.io/).
 
+![Code Polyglot Techno Screenshot](image/CodePolyglot_TechnoSkin_Nokia_Screenshot.png)
+
 Syntax highlighting is implemented using several libraries and languages:
 
 1. [Highlight.js](https://github.com/highlightjs/highlight.js/) and JavaScript.
@@ -13,10 +13,10 @@ Syntax highlighting is implemented using several libraries and languages:
 
 ![Code Polyglot Pastorg Screenshot](image/CodePolyglot_PastorgSkin_Screenshot.png)
 
-*Live demo: [code.exlmoto.ru](https://code.exlmoto.ru) with Highlight.js and Rouge syntax higlighters.\
-Pygments on [GraalPython](https://github.com/oracle/graalpython) are CPU and RAM intensive.
+*Live demo: [code.exlmoto.ru](https://code.exlmoto.ru) with Highlight.js and Rouge syntax higlighters.*\
+*Pygments on [GraalPython](https://github.com/oracle/graalpython) are CPU and RAM intensive.*
 
-Note: Service can sometimes be offline.*
+*Note: Service can sometimes be offline.*
 
 ## API examples
 
@@ -147,6 +147,7 @@ export PATH=$GRAALVM_HOME/bin:$PATH
 
 cd ~/CodePolyglot/
 DB_CONNECTION=jdbc:postgresql://localhost:5432/code DB_USERNAME=user DB_PASSWORD=password ./gradlew clean build
+# ./gradlew clean bootJar
 sudo mv build/libs/code-polyglot-*.jar /srv/
 ```
 

doc/UsefulTips.md

@@ -0,0 +1,37 @@
+Useful Tips
+===========
+
+## Find all files without line ending at the end
+
+```shell script
+find src/ doc/ util/ -type f -print0 | xargs -0 -L1 bash -c 'test "$(tail -c 1 "$0")" && echo "No new line at end of $0"'
+```
+
+This command should be run at the root of the project.
+
+## Find trailing spaces on files
+
+```shell script
+grep -r '[[:blank:]]$' src/ doc/ util/
+```
+This command should be run at the root of the project.
+
+## Find stored a static file in the Nginx cache
+
+```shell script
+grep -lr 'login.css' /var/nginx/cache/*
+```
+
+This command should be run on the server side with root user privileges.
+
+## Add license header to files by name mask
+
+```shell script
+find . -name \*.java -exec sh -c "mv '{}' tmp && cp util/template/license_header_common '{}' && cat tmp >> '{}' && rm tmp" \;
+find . -name \*.py -exec sh -c "mv '{}' tmp && cp util/template/license_header_other '{}' && cat tmp >> '{}' && rm tmp" \;
+```
+
+* [license_header_common](../util/template/license_header_common) template applies to the C, C++, Java source files.
+* [license_header_other](../util/template/license_header_other) template applies to the Python and other source files.
+
+These commands should be run at the root of the project.

util/template/license_header_common

@@ -0,0 +1,24 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015-2020 EXL <exlmotodev@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+

util/template/license_header_other

@@ -0,0 +1,22 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2015-2020 EXL <exlmotodev@gmail.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+