Update readmes, requirements, packagejsons, etc for all examples (#1452)

Most of the examples needed updates of Readmes to show how to run them. Some of the requirements.txt files had extra content that wasn't needed, or missing altogether. Apparently some folks like to run npm start
to run typescript, so a script was added to all typescript examples which
hadn't been done before.

Basically just a lot of cleanup.

Signed-off-by: Matt Williams <m@technovangelist.com>

examples/python-loganalysis/loganalysis.py

@@ -16,12 +16,12 @@ def find_errors_in_log_file():
   with open(log_file_path, 'r') as log_file:
     log_lines = log_file.readlines()
 
-error_logs = []
-    for i, line in enumerate(log_lines):
-        if "error" in line.lower():
-            start_index = max(0, i - prelines)
-            end_index = min(len(log_lines), i + postlines + 1)
-            error_logs.extend(log_lines[start_index:end_index])
+  error_logs = []
+  for i, line in enumerate(log_lines):
+      if "error" in line.lower():
+          start_index = max(0, i - prelines)
+          end_index = min(len(log_lines), i + postlines + 1)
+          error_logs.extend(log_lines[start_index:end_index])
 
   return error_logs
 
@@ -32,7 +32,6 @@ data = {
   "model": "mattw/loganalyzer"
 }
 
-
 response = requests.post("http://localhost:11434/api/generate", json=data, stream=True)
 for line in response.iter_lines():
   if line: