Update README.md

README.md

+# Interface error details
+
+Monitors error details of ethernet like interfaces
+
+Check Info:
+
+* *service*: creates one item per ethernet like interface
+* *state*: always ok
+* *wato*: none
+* *perfdata*: 
+    * Alignment errors 
+    * Deferred transmissions 
+    * Excessive collisions 
+    * FCS errors 
+    * Frame too long 
+    * Internal MAC receive errors 
+    * Internal MAC transmit errors 
+    * Late collisions 
+    * Multiple collision frames 
+    * Sarrier sense errors 
+    * Single collision frames 
+    * Symbol errors 
+    * SQE test errors
+ 
+
+
+
+**IMPORTANT: Disable this check globaly please. Enable it only for devices where you want to monitor RX/TX pause frames.** \
+**(in my environment of about 600 switches it added around 6000 new services!!!)**
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